RMMBA vs Reto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RMMBA
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This app show any phone number in all possible alphanumeric styles. You enter a phone number that you want to remember and you will get all possible numpad letter variations. You can then pick one that is easiest to remember for you. Perfect for remembering important phone numbers of your spouse, children or colleagues. For example: 4663 becomes GOOD. Since 4 on the phone pad is also where the G is, 6 is where the O is and so on.
Reto
This app allows you to manage your personal schedule and easily share events with others. You can also add photos and diaries to past events, creating shared memories with friends and family. Widgets provide quick access to your schedule and memories.
- Personal calendar management
- Shared event scheduling
- Public event visibility
- Photo and diary memories
- Home screen widgets
- Google/Apple Calendar integration
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Use it as your personal calendar, and effortlessly share events with your significant other, family, or friends. 1. **Personal Calendar** Use it as your personal calendar. Reto Calendar allows you to use it on your own, recording photos and diaries for past events. 2. **Shared Calendar** Have plans with a friend? Tag them in the event. It will automatically be added to your friend's calendar too, and you can both upload photos together. 3. **Public Events** Want to show your schedule to others? Make your events public. Friends visiting your calendar can see them. 4. **Memories from Past Events** Leave photos and diaries for past events. You can comment with friends who were part of those memories and share stories. 5. **Widgets** There are five types of widgets: daily, weekly, and monthly. Reminisce memories and keep track of your schedule right from your home screen. 6. **Integration with Google/Apple Calendar** Bring together various calendars from your smartphone to view them all at once.
Screenshots
Verdict
The clearest difference is price: Reto at Free against RMMBA's $0.99. Reto also leads on update cadence (every 6 days vs every 38 months) and iOS requirement (13.0 vs 16.0). On 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
Reto is free to download; RMMBA costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RMMBA ships an update every 38 months, Reto every 6 days. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.
| Parameter | RMMBA | Reto |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.6 (5 ratings) — better |
| Positive reviews | — | 92.3% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 38 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Philipp Baldauf | UnCheon Baek |
In-app purchases
RMMBA
No in-app purchases
Reto
No in-app purchases









