# Fill it Forward vs doublechin

The clearest difference is review sentiment: doublechin at 100% against Fill it Forward's 38%. doublechin also leads on rating (5.0 vs 3.4) and update cadence (every 9 days vs monthly). Fill it Forward's advantage is in-app purchases (none vs 1) and ratings volume (16 vs 1). On price and ads there is nothing between them.

Both are free to download. doublechin sells 1 in-app purchase, starting at $3.99 per month. Fill it Forward asks for nothing beyond the download.

doublechin holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Fill it Forward has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 38% of Fill it Forward's written reviews are positive against 100% of doublechin's.

Fill it Forward ships an update monthly, doublechin every 9 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fill it Forward | doublechin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (16 ratings)](https://appshunter.io/ios/app/fill-it-forward/id1375687335/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doublechin-ldr-app/id6777339231/reviews)** |
| Number of ratings | **16** | 1 |
| Positive reviews | 37.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 184 MB | 22 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Green Menu Inc.](https://appshunter.io/developer/966545400) | [Joshua Dirga](https://appshunter.io/developer/6777339233) |

## What reviewers say

### Fill it Forward

[App page](https://appshunter.io/ios/app/fill-it-forward/id1375687335)

This app connects you to a community focused on giving back and environmental responsibility. Track your positive impact, contribute to charitable projects, and stay hydrated by scanning your reusable bottle or sticker.

**Highlights:** Contribute to charitable projects, Track environmental impact, Join community groups and leaderboards, Monitor beverage consumption, Earn status levels and discounts, Enter community draws, Find refill stations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💚 Meaningful environmental and social impact mission
- 💧 Motivates increased water consumption and hydration
- 🎯 Simple scanning concept for tracking reuses
- 🏆 Gamification features with groups and leaderboards
- 📊 Visual impact tracking showing environmental savings

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 📱 White screen/blank screen issues on launch
- 📷 Camera/scanner consistently fails to read QR codes
- ⏱️ Extremely slow loading times and performance lag
- 🔄 Data tracking inaccuracies and lost records

**Reported bugs**

- Camera scanner won't focus or read QR codes
- App crashes immediately after scanning
- White/blank screen appears on app launch
- Reuse data shows zero or incorrect values
- Profile picture cannot be saved

**Requested features**

- Add friends and create private group competitions
- Monthly/yearly impact statistics and history logs
- Daily water intake tracking by day/month/year
- Integration with Apple Health app for water tracking
- Support for multiple bottles with different sizes


### doublechin

[App page](https://appshunter.io/ios/app/doublechin-ldr-app/id6777339231)

This app helps long-distance couples stay connected by sharing short video clips of everyday moments. Capture your surroundings and your reaction simultaneously, and build a shared archive of memories. It offers a private space for couples to share their lives despite geographical distance.

**Highlights:** Front-and-back camera clips, Shared daily video moments, Private couple archive, Generate video reels, Add song of the day, Invite-only pairing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Triple Chin | $3.99 | per month |


## Frequently asked questions

### Is Fill it Forward free?

Fill it Forward is free to download, with no in-app purchases.

### Is doublechin free?

doublechin is free to download, with in-app purchases available.

### Which has better reviews, Fill it Forward or doublechin?

doublechin is rated higher. Fill it Forward averages 3.4 out of 5 from 16 ratings, while doublechin averages 5.0 from 1 ratings.

### Do Fill it Forward or doublechin have ads?

Neither Fill it Forward nor doublechin shows ads.

### Which is updated more often, Fill it Forward or doublechin?

Fill it Forward ships an update monthly, and doublechin every 9 days. Most recently, Fill it Forward was updated on November 2, 2026 and doublechin on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*