Comparison

Fill it Forward vs doublechin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fill it Forward

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
Read full description

With the Fill it Forward app you will be part of a community that is always giving. Contribute to meaningful charitable projects, track your environmental footprint, join the community, and stay hydrated every time you reuse. HOW IT WORKS: 1. Obtain a Fill it Forward bottle or place a Fill it Forward sticker on your reusable 2. Download the app and sign up with your email address 3. Scan the sticker every time you reuse Shop our products at fillitforward.com APP FEATURES: Contribute To Meaningful Charitable Projects --- Every time you scan your Fill it Forward sticker, we contribute to charitable projects around the world. You can track the progress of the projects and we’ll update you as projects are completed. Help Build The Fill it Forward Community With Groups --- Join Fill it Forward open groups to track your collective impact and check out which users are leading the way with the group’s leaderboard. Track Your Environmental Impact --- Every time you reuse, you are making a positive environmental impact. With the Fill it Forward app, you can easily track waste diverted, emissions saved, and how much ocean pollution you have prevented. Stay Hydrated --- Track your beverage consumption throughout the day. We make it easy to set goals and reminders so you always meet your hydration goals. Obtain Status --- Continue scanning to work through a series of status levels that provide promo codes to our store as well as other partner discounts Join Community Draws --- Every scan automatically enters you into a draw with different prizes every month Find where to fill up --- Use our refill map to find hundreds of thousands of refill stations across the world Engage with friends --- Add friends and compare stats with our extended community features

About

doublechin

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
Read full description

doublechin is an LDR app for couples who want to feel closer through tiny daily moments. Capture quick front-and-back camera clips: what you see, plus your face in the moment. Share meals, little highlights, and the everyday pieces of life that usually get lost in a time zone gap. Made for long-distance couples: - Post tiny daily video moments - Capture the scene and your reaction together - See your partner's previous day when your schedules do not overlap - Keep breakfast, lunch, dinner, and life highlights in one shared grid - Add a song of the day - Generate reels from moments you both shared - Save a private archive of the little things you would have missed Invite one partner to share your everyday moments. There is no public feed, no strangers, and no pressure to perform for anyone else. Triple Chin unlocks your full couple history, unlimited reels, and watermark-free reel exports. Terms of Use: https://doublechinapp.com/terms Privacy Policy: https://doublechinapp.com/privacy

Screenshots

Fill it Forward4 screens
doublechin4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard8 real differences · 2 level
Fill it Forward versus doublechin: the parameters behind the verdict, then further details
ParameterFill it Forwarddoublechin
PriceFreeFree
Rating3.4 (16 ratings)5.0 (1 ratings) — better
Positive reviews37.7% of reviews100.0% of reviews — better
Number of ratings16 — better1
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size184 MB22 MB
Age rating4+17+
DeveloperGreen Menu Inc.Joshua Dirga

Customer experience

Fill it Forward

All ratings16 ratings
Positive50.0%
Neutral12.5%
Negative37.5%
Written reviews114 reviews
Positive37.7%
Neutral20.2%
Negative42.1%

doublechin

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Fill it Forward

Reported bugs

15 issues
  • 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
Show 10 more
  • App freezes when checking group status
  • Scanner shows black screen instead of camera feed
  • Scanning count doesn't update properly
  • App incompatible with iOS 13 and newer versions
  • Login screen fails to load
  • Microphone permission required unnecessarily
  • Timezone awareness issues with day tracking
  • Data wipes after password reset
  • Leaderboard data not syncing across devices
  • Help/contact feature requires external email app

Requested features

12 requests
  • 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
Show 7 more
  • Push notifications for hydration reminders
  • Monetary donation total visibility in profile
  • Tap-to-log feature as alternative to barcode scanning
  • Keychain attachment option instead of stickers
  • Offline logging capability with sync when service returns
  • Ability to change bottle size beyond 999ml limit
  • Global impact dashboard showing worldwide progress

doublechin

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Fill it Forward

No in-app purchases

1 purchases

doublechin

Subscriptions1
  • Triple Chin$3.991 Month

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.

Other comparisons