Wavista Apps

Lantern Terms of Use

Motion Graphics AI - Lantern ยท Effective date: October 26, 2026

1. About these terms

These terms apply to Lantern, an iPhone app published by Wavista Apps ("we", "us"). Wavista Apps is operated by William Tsao, an individual based in California, USA. By downloading or using Lantern, you agree to these terms. If you do not agree, do not use the app.

If you are under 18, you may use Lantern only with your parent's or guardian's permission. Where the law requires it, the App Store asks for that permission.

2. Apple's standard license

Lantern is licensed to you under Apple's standard Licensed Application End User License Agreement (the "Apple EULA"). These terms add to the Apple EULA. If the two conflict, the Apple EULA controls your license to use the app. Apple is not a party to these terms and is not responsible for the app or its content.

3. Lantern Pro and credits

  • Sold through Apple. Making and changing videos needs Lantern Pro, an auto-renewing subscription sold through Apple's App Store. There are two plans: Weekly, at $8.99 a week, and Yearly, at $59.99 a year (prices in the United States). Only the Weekly plan has a free trial, for new subscribers. The purchase screen shows the price, how often it renews and any free trial before you buy. Prices can differ by country. There are no free videos.
  • Payment. Payment is charged to your Apple Account when you confirm the purchase or, if you start with a free trial, when the trial ends.
  • Automatic renewal. Lantern Pro renews automatically for the same length at the then-current price unless you turn off auto-renew at least 24 hours before the end of the current period. Your Apple Account is charged for the renewal within the 24 hours before the current period ends.
  • Free trial. The free trial, when offered, lasts 3 days, is on the Weekly plan and is for new subscribers. If you do not cancel at least 24 hours before the trial ends, it becomes a paid subscription. Any unused part of a free trial ends when you buy a subscription.
  • Managing and cancelling. Manage or cancel in your iPhone's Settings: tap your name, then Subscriptions, or tap Manage subscription in the app's Settings, under Plan and credits. Cancelling stops the next renewal; you keep your plan until the end of the period you paid for. Deleting the app does not cancel the subscription. Your subscription belongs to your Apple Account, so Restore purchases brings it back on a new iPhone or after a reinstall.
  • Changing plans. You can move between Weekly and Yearly in the same places. Apple handles the change: moving to Yearly starts at once, and Apple refunds the unused part of your Weekly plan as a prorated amount; moving to Weekly starts at your next renewal, and you keep Yearly until then. Credits are counted by week (see below), so credits you already used that week count toward the new plan's credits for the week.
  • Credits. Each plan gives you credits to make videos with: the Weekly plan 100 credits each week, the Yearly plan 15 credits each week, and the free trial 15 credits in total. A week starts every Monday at 00:00 Coordinated Universal Time (UTC), not on the day your subscription renews. When a free trial turns into a paid subscription, the plan's credits for that week start. Credits you do not use in a week do not carry over. Credits come only with Lantern Pro: they are not sold on their own, have no cash value, and cannot be transferred or exchanged. Settings and the message box show how many you have left.
  • What a video costs. Credits pay for the AI work a message takes. One credit stands for 4 US cents of what our AI providers (OpenAI, and ElevenLabs for voice-overs) charge for that work at their published prices, including their discounts. Before you send, the app shows an estimate and the most the message can use, and it never uses more than that: a new video at most 2 credits plus 1 for every 10 seconds of length started (6 seconds: 3, 15 seconds: 4, 30 seconds: 5, 1 minute: 8), plus 1 for every 30 seconds of voice-over started when the voice-over is made by ElevenLabs (a 15-second video with a voice-over: 5, 45 seconds: 9, 1 minute: 10), and a change at most 1 credit. A video without a voice-over never uses the extra credits. This includes the video's sound (section 5). If the work costs more, we pay the difference. A change that asks for another shape or another length counts as a new video of the new length. To send a message you need at least its estimate; with less than its most, it uses at most what you have left. The length is the one you pick, or else the first length your message names (such as "30 seconds" or "a minute"), or else 15 seconds for a new video and the video's own length for a change. Videos can be 3 seconds to 1 minute long.
  • When credits come back. A message's credits are set aside when you send it. If the check refuses the message (section 4), or the video cannot be made for a technical reason (for example our renderer or the AI is not available, or it takes too long), its credits come back, as long as the week they came from is still running. If OpenAI's AI declines to make the video after the message passed the check, the credits for the AI work already done are used, never more than the message's most.
  • Rendering again. Our server keeps a video's files for about 2 days. If they have expired and the video is not on your iPhone, Render again makes the latest version again for free, up to 10 times a day.
  • Limits. One message can hold up to 2,000 characters and 4 photos, one video chat up to 30 messages and 8 photos, and you can send up to 200 messages a day. These limits stop runaway or automated use; credits are what limit normal use. The app tells you when you reach one.
  • Refunds. Apple handles all payments and refunds under its own policies. Request a refund at reportaproblem.apple.com. We cannot issue refunds directly.

4. Videos Lantern does not make, and acceptable use

Lantern does not make, and you agree not to use Lantern or any video it makes for:

  • sexual or nude content;
  • anything sexual or exploitative involving minors;
  • content that attacks or demeans people for who they are, such as their race, religion, sex, sexual orientation or disability;
  • content that targets, mocks or threatens a real private person;
  • graphic gore, or content that celebrates or incites violence;
  • content that encourages suicide, self-harm or eating disorders;
  • help with crimes, or with buying or making weapons, drugs or other illegal goods;
  • fake news reports, fake official notices or scams, or videos that pretend to come from a real company, government or public figure, or put words in a real person's mouth;
  • praise or recruitment for terrorist or violent extremist groups.

Every message is checked for these before any video work starts, and a refused message costs nothing. This list applies even when the check does not stop a request.

You also agree not to:

  • add photos, logos, names, trademarks or other material that you do not have the right to use, or use a real person's name or picture in a way they have not agreed to;
  • present a video as real footage, as news, or as coming from someone who did not make or approve it;
  • try to get around these rules, for example by rewording a refused request or splitting it into pieces;
  • use the app to break the law, or to harm, harass or deceive anyone;
  • try to get around the credits, limits or other safeguards, or send requests to our server other than through the app;
  • copy, reverse engineer or interfere with the app or our server, except where the law allows it.

We may stop providing the service to anyone who breaks these rules.

5. Your content and your videos

You keep all rights to the words, photos and logos you add. You let us use them only to provide the feature you asked for, as described in Lantern's privacy policy (for example, sending your messages and photos to OpenAI's AI to make your video, and the words of its voice-over to ElevenLabs to speak them). We claim no rights in the videos Lantern makes for you: as far as we are concerned, they are yours to use for any lawful purpose, including for your business. Videos made with AI may not be protected by copyright, and another person who asks for something similar may get a similar video. You are responsible for the videos you post or share, and for having the rights to what you put in them.

Videos are saved on your iPhone when they are ready. Our server keeps their files for about 2 days, and each video chat, with what it needs to change or render the video again, for up to 90 days. After that, a video you did not keep on your iPhone, in Photos or elsewhere cannot be recovered.

Sound, music and AI voices

Every video comes with sound: music and sound effects that Lantern's AI writes as code for that video, and a voice-over when the video benefits from one or you ask for it. If you ask for no music, the video gets sound effects and background sound instead; if you ask for no voice-over, it has none.

Music. Lantern writes original music for each video. It uses no samples or recordings of existing songs, and if you name a song or an artist, you get original music in that mood or style instead. Lantern may arrange these well-known tunes, which are in the public domain: Happy Birthday, Twinkle Twinkle Little Star, Jingle Bells, Ode to Joy, Für Elise, Canon in D, Greensleeves and Auld Lang Syne. Short melodies and chord patterns can sound like existing music by chance, so we cannot promise that a platform's automatic content matching will never flag a video.

AI voices. Voice-overs are made by AI from lines written for the video: by ElevenLabs' text-to-speech AI, or by OpenAI's if you allowed AI video making on a version of the app whose consent screen named only OpenAI. They are AI-generated, not the voice of a real person, and the video file says so in its details ("Contains an AI-generated voice."). When you share a video with an AI voice, you agree to say that the voice is AI-generated wherever a platform's rules or the law require it, and never to present it as a real person's voice.

6. AI-made videos can be wrong

Lantern uses AI (OpenAI, and ElevenLabs for voice-overs) to check your messages and to plan, write and voice your videos. AI can be wrong, even when it looks sure. A video can misspell a word, mispronounce a name in its voice-over, get a fact, date or number wrong, draw a chart that does not match your data, or not look the way you meant. For videos that give facts, Lantern may check them with AI, but it does not check facts against other sources, and it never changes a number, quote or name you gave. Watch every video before you share it, and check every name, fact and number in it.

Lantern makes animated graphics: text, shapes, icons, charts, illustrations and your photos. It does not make filmed or lifelike footage, and its videos' backgrounds are not transparent. Most videos take 1 to 5 minutes, and some take longer or fail; a video that fails for a technical reason gives its credits back (section 3).

7. Other companies' services

Lantern relies on services from other companies, such as Apple (the App Store, payments, subscriptions and notifications), OpenAI (cloud AI and AI voices), ElevenLabs (AI voices) and Expo (notifications and app updates). Their own terms apply to their services, and we are not responsible for them.

8. Changes to the app

We may add, change or remove features, styles or plans, or stop offering the app. Features that use our server need an internet connection and may sometimes be unavailable.

9. No warranty

To the extent the law allows, Lantern and the videos it makes are provided "as is" and "as available", without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. We do not promise that a video will be accurate, will match what you asked for, will be free of material that someone else has rights in, or will be right for any use, or that the app will be error-free or uninterrupted. Some places do not allow these exclusions, so some of them may not apply to you.

10. Limitation of liability

To the extent the law allows, we are not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of profits, revenue, data or goodwill, arising from your use of, or inability to use, Lantern or the videos it makes. To the extent the law allows, our total liability for all claims relating to Lantern is limited to the greater of the amount you paid us through the App Store in the 12 months before the claim and US$50.

Nothing in these terms limits or excludes our liability for fraud, for willful injury, for gross negligence, for breaking the law, or for death or personal injury where the law does not allow it to be limited, and nothing in these terms takes away rights you have as a consumer that the law does not allow to be waived.

11. Changes to these terms

We may update these terms. We will post the new version on this page with a new effective date, and for important changes we will also tell you in the app or on this page before they take effect. If you keep using Lantern after the changes take effect, you accept the new terms.

12. Governing law

These terms are governed by the laws of the State of California, USA, without regard to its conflict of laws rules. Any dispute will be decided in the state or federal courts located in Los Angeles County, California, unless the law where you live gives you the right to bring it in your local courts. If a court finds part of these terms unenforceable, the rest stays in effect, and that part applies as far as the law allows.

13. Contact

Questions about these terms: support@wavistaapp.com.

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