Sincerely vs SleighSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sincerely
An anonymous platform to share your thoughts and feelings through written letters. Connect with a supportive community, receive caring responses, and find solace in a judgment-free space. Features include a mood tracker, AI chat support, and the ability to uplift others.
- Write anonymous letters
- Receive community responses
- Offer support to others
- Send virtual hugs
- Mood tracker
- AI chat support
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Need to unburden your soul? Feeling lost and looking for support? Sincerely is your anonymous haven to share, connect, and heal. Write your heart out in heartfelt letters, and receive caring responses from a supportive community. You're never alone. Connect with others who understand. Find solace and offer guidance in a judgment-free space. Why You'll Love It: • Write letters to get things off your chest. • Receive 3 letters every night at 8pm. • Respond to strangers and offer support. • Send virtual hugs to uplift others. • Track your impact with helpful data streaks. • Make friends and continue conversations. • Monitor your emotional well-being with a mood tracker and calendar. • Get instant support and answers from our AI chat. Ready to find your safe space? Download Sincerely today. Terms of Service: https://sincerelyapp.notion.site/Sincerely-Terms-of-Service-v04-01-2024-de28f29dc48e44a1b9bcf5e179541ccf Privacy Policy: https://sincerelyapp.notion.site/Sincerely-Privacy-Policy-v02-26-2024-d79628c1700d4d069e7d301671f88189
SleighSync
Simplify holiday gift exchanges with this app. Organize wish lists, share them securely with family, and coordinate gift purchases to avoid duplicates and stay within budget. It's designed for families to manage gift-giving seamlessly.
- Create and organize gift lists
- Share lists securely with family
- Track who is buying which gift
- Monitor spending and budget
- Prevent duplicate gifts
- Coordinate gift exchanges
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SleighSync makes holiday gift-giving simple. Create gift lists, share them with family, and coordinate who's buying what — so no one shows up with the same present! Created for families who want to: Organize wish lists in one place Share lists easily with a simple code See who's buying what (no spoilers for the gift recipient!) Track spending and stay on budget Eliminate duplicate gifts forever Whether you're managing your kids' Christmas lists or coordinating with extended family across the country, SleighSync keeps everyone in sync.
Screenshots
Verdict
The clearest difference is ratings volume: Sincerely at 36K against SleighSync's 1. Sincerely also leads on chart position (#97 vs unranked) and iOS requirement (16.6 vs 18.6). SleighSync's advantage is rating (5.0 vs 4.7) and update cadence (every 6 days vs every 2 weeks). On price, ads, in-app purchases and monetization model 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. Sincerely sells 19 in-app purchases, starting at $4.99 per month and SleighSync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SleighSync holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sincerely has 36K ratings behind it against 1, so its average is the more settled of the two.
Sincerely ships an update every 2 weeks, SleighSync every 6 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Sincerely | SleighSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (36K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 39.9% of reviews | — |
| Number of ratings | 36K — better | 1 |
| Update frequency | Every 2 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #97 — better | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 143 MB | 19 MB |
| Age rating | 17+ | 4+ |
| Developer | MWM | MetricMind |
Customer experience
Sincerely
SleighSync
Bugs and requests
Sincerely
Reported bugs
3 issues- Issues with account creation and login
- Inconsistent behavior when switching between app pages
- Reported messages not being properly removed
Requested features
5 requests- Ability to write more than one letter per day
- Option to receive more letters per day
- Ability to view and respond to past conversations
- In-app chat feature for immediate support
- Customizable notification settings
SleighSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sincerely
- Sincerely Club Monthly2 variants$4.991 Month
- Sincerely - Premium3 Days trial$4.997 Days
- Sincerely Club Monthly2 variants$5.991 Month
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- Sincerely Club Weekly1 Month trial$7.997 Days
- Sincerely - Premium3 Days trial2 variants$7.997 Days
- Sincerely - Premium$7.997 Days
- Sincerely Club Monthly$9.991 Month
- Sincerely Club Annual2 variants$29.991 Year
- Premium Pass1 Month trial$29.991 Year
- Sincerely Club Annual3 Days trial$29.991 Year
- Sincerely Club Annual3 Days trial$34.991 Year
- Annual Premium Plan3 Days trial$39.991 Year
- Sincerely Club Annual$39.991 Year
- Sincerely - Premium3 Days trial$49.991 Month
- Sincerely - Premium$49.991 Month
- Sincerely Club Annual3 Days trial$59.991 Year
- Premium1 Month trial$69.991 Year
- Sincerely Club Annual$89.991 Year
- Premium Pass3 Days trial$99.991 Year
SleighSync
- Premium Upgrade$0.99
