答案之书 vs Reverse Audio Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
答案之书
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这是传说中的神奇答案之书。
Reverse Audio Challenge
Record your voice, reverse it, and challenge friends to guess the original message. Explore fun sound effects, reverse text, and even play your favorite songs backward. A popular social game for endless entertainment.
- Record and reverse voice messages
- Guess reversed messages
- Mimic and re-reverse voices
- Fun sound effects
- Reverse text messages
- Hot Words module for ideas
- Music reversal
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〖Reverse Challenge〗 “Reverse Challenge” is an app that records and reverses your voice for playback. It’s one of the most popular games on TikTok, loved by millions of users! Whether you’re hanging out with friends or just looking to pass the time, gather your companions and start a “Reverse Challenge”! Each participant records a voice message as the “answer,” and then our app will reverse it. The fun begins as you take turns guessing the original message. If you can’t figure it out, try mimicking the reversed voice and use the app to reverse it again to see how close you can get. The better your mimicry, the closer you’ll be to the original “answer”! We offer a variety of fun sound effects to make your recordings even more interesting. You can also reverse text—no recording required. Just type your message, and we’ll read and reverse it for you. Our built-in Hot Words module features a collection of popular phrases, so you’ll never run out of ideas. 〖Instructions〗 1. Tap Record and say the message you want to reverse, then end the recording. 2. Tap Reverse and play it for your friends. 3. Ask your friends to mimic the reversed message and record it again. 4. Let your friends guess the original message by listening to the reversed version.A simple yet endlessly fun game awaits! Download “Reverse Challenge” and enjoy a great time with your friends! 〖Music Reversal〗 The all-new “Music Reversal” is here! Have you ever wondered what your favorite songs sound like in reverse? Now, search and play your favorite tracks in reverse right within the app, explore music from a new perspective, and enjoy a unique auditory experience! 〖Subscription Details〗 • Subscribe to unlock all features and content. • Subscriptions are billed annually based on your selected plan. You can also choose a one-time purchase (non-subscription). • Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. The fee will be charged to your iTunes account upon confirmation of purchase. After purchasing, you can manage your subscription and disable auto-renewal in your account settings. Per Apple’s policy, current subscriptions cannot be canceled during the active period, and no refunds will be given for unused portions. • Terms of Use: https://hcninsaf3hn8.feishu.cn/wiki/P9vXwk64qivb0ekldHucLvmMnuc • Privacy Policy: https://hcninsaf3hn8.feishu.cn/wiki/WhACwACd9iI6VGkSsB4crdyPnWc 〖Feedback〗 If you encounter any issues or have suggestions, feel free to contact us: Email: feedback@onedium.tech
Screenshots
Verdict
The clearest difference is review sentiment: Reverse Audio Challenge at 61% against 答案之书's 17%. Reverse Audio Challenge also leads on update cadence (every 2 weeks vs every 12 months). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 答案之书 sells 1 one-off in-app purchase and Reverse Audio Challenge sells 4 in-app purchases, starting at $0.49 per year. Whichever you choose, the download price is not the number that matters.
答案之书 ships an update every 12 months, Reverse Audio Challenge every 2 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.
| Parameter | 答案之书 | Reverse Audio Challenge |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (173 ratings) — better |
| Positive reviews | 16.7% of reviews | 60.6% of reviews — better |
| Number of ratings | — | 173 — better |
| Update frequency | Every 12 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 6 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | 唯墨科技 | Hangzhou Onedium Technology Co., Ltd. |
Customer experience
答案之书
Reverse Audio Challenge
In-app purchases
答案之书
- 解锁无限问题$0.99
Reverse Audio Challenge
- 解锁应用内全部功能3 Days trial$0.491 Year
- 解锁应用内全部功能3 Days trial$1.991 Year
- 升级为 PRO$0.99
- 升级为 PRO$2.99









