PotatoBox vs LookOnce
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PotatoBox
Experience the nostalgic charm of a paper-roll music box on your iPhone and iPad. Compose your own melodies by tapping notes onto a paper roll, import MIDI files, and enjoy background playback with system controls. Explore a library of classical and traditional pieces.
- Paper-roll music box simulation
- Compose original melodies
- Import and edit MIDI files
- Background music playback
- Library of classical pieces
- Undo/redo functionality
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PotatoBox brings the charm of a paper-roll music box to your iPhone and iPad. Push in the handle, swipe upward to wind it and watch the punched paper move as the music plays. Pull the handle out to pause. PLAY AND EXPLORE Browse built-in classical and traditional pieces, select a paper roll and listen to its music-box performance. View the sources and licenses for the included scores inside the app. MAKE YOUR OWN MUSIC Tap the paper to add or remove notes, build chords, adjust tempo and use undo and redo while composing. Preview your melody, save your work and return to edit it later. IMPORT MIDI Open supported MIDI files in the composer to explore their notes and tempo. Edit the imported music and save it as your own paper-roll composition. KEEP LISTENING Continue playback in the background and use the system playback controls to pause or resume. PotatoBox supports English, Simplified Chinese, Hindi, Spanish, Arabic, French, Bengali, Portuguese, Indonesian, Urdu and Japanese.
LookOnce
This utility app helps you quickly confirm tasks in various daily situations without complex tracking. Data is stored locally for enhanced privacy. Create custom check scenes for different routines and easily manage, share, or export your completed confirmations.
- Local data storage for privacy
- Customizable check scenes
- Focused, simple check process
- Scene management with favorites
- Swipe-left deletion for scenes
- Sharing and export of results
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LookOnce is a quick check tool for different moments in daily life.Your data is stored locally, giving you more peace of mind about privacy. It is not a to-do list, and it is not a complicated tracking app. It is designed for moments when you simply want to confirm something once before moving on — leaving home, traveling, commuting, starting work, preparing for sleep, running errands, or any small routine that you do not want to keep worrying about. You can create separate check scenes for different situations. Open the scene you need, go through the items, and finish the check in a simple, focused way. LookOnce 1.2 improves scene management with favorites and swipe-left deletion. It also adds sharing and export for completed check results, making it easier to save or use your confirmation record when needed. Check once, then let it go.
Screenshots
Verdict
The clearest difference is price: LookOnce at Free against PotatoBox's $1.99. PotatoBox's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement 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
LookOnce is free to download; PotatoBox costs $1.99 up front. LookOnce sells 1 one-off in-app purchase. PotatoBox asks for nothing beyond the download.
PotatoBox ships an update every 5 days, LookOnce every 9 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | PotatoBox | LookOnce |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 琳钧 黄 | 楷文 罗 |
Customer experience
PotatoBox
LookOnce
In-app purchases
PotatoBox
No in-app purchases
LookOnce
- LookOnce Pro$4.99








