# SendProof vs Duosti

The clearest difference is ads: Duosti at none against SendProof's shown. Duosti also leads on update cadence (weekly vs fortnightly) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. SendProof sells 3 in-app purchases, starting at $2.99 per month and Duosti sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SendProof ships an update fortnightly, Duosti weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SendProof | Duosti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sendproof-accountability/id6760977881/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Freemium | — |
| Size | 37 MB | 62 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Idanite LLC](https://appshunter.io/developer/1785910235) | [Akshara Bidkar](https://appshunter.io/developer/6801827307) |

## What reviewers say

### SendProof

[App page](https://appshunter.io/ios/app/sendproof-accountability/id6760977881)

This app provides real accountability for habit tracking by requiring users to submit photo proof of their completed habits to a friend. It ensures that streaks are earned through actual evidence, not just self-reporting, fostering genuine progress.

**Highlights:** Photo proof for habits, Accountability partner review, Build honest streaks, Two-way coaching, Fast habit tracking, Goal and habit building

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SendProof Plus Monthly | $2.99 | per month |
| SendProof Plus Yearly | $24.99 | per year |
| Freeze Pack | $0.99 | one-time |


### Duosti

[App page](https://appshunter.io/ios/app/duosti-habit-tracker-for-two/id6801827305)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duo monthly subscription | $2.99 | per month |
| Duo Yearly Subscription | $19.99 | per year |


## Frequently asked questions

### Is SendProof free?

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

### Is Duosti free?

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

### Do SendProof or Duosti have ads?

SendProof shows ads; Duosti does not.

### Which is updated more often, SendProof or Duosti?

SendProof ships an update fortnightly, and Duosti weekly. Most recently, SendProof was updated on October 19, 2026 and Duosti on October 24, 2026.

---

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