# Sinkstack vs Outflow

The clearest difference is price: Outflow at Free against Sinkstack's $0.99. Sinkstack's advantage is in-app purchases (none vs 1) and chart position (#49 vs unranked). On update cadence, ads, device support and iOS requirement there is nothing between them.

Outflow is free to download; Sinkstack costs $0.99 up front. Outflow sells 1 one-off in-app purchase. Sinkstack asks for nothing beyond the download.

Sinkstack ships an update every 6 days, Outflow every 5 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Sinkstack | Outflow |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/outflow-track-subscriptions/id6779691937/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | **#49** | — |
| Size | 6 MB | 19 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Corbin](https://appshunter.io/developer/1890247992) | [Andy Mesa](https://appshunter.io/developer/1851743474) |

## What reviewers say

### Sinkstack

[App page](https://appshunter.io/ios/app/sinkstack-paycheck-budget/id6776308197)

**Currently charting:** #49 Top Paid · Finance (US App Store)

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

**In-app purchases:** none


### Outflow

[App page](https://appshunter.io/ios/app/outflow-track-subscriptions/id6779691937)

Track recurring expenses without linking bank accounts. Get timely reminders for renewals and view your spending breakdown by category. Offers on-device intelligence for effortless entry and prioritizes user privacy.

**Highlights:** No bank linking required, Recurring expense tracking, Renewal reminders, Spending breakdown by category, On-device intelligence for entry, Privacy-focused design

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Outflow Pro | $4.99 | one-time |


## Frequently asked questions

### Is Sinkstack free?

Sinkstack costs $0.99, with no in-app purchases.

### Is Outflow free?

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

### Do Sinkstack or Outflow have ads?

Neither Sinkstack nor Outflow shows ads.

### Which is updated more often, Sinkstack or Outflow?

Sinkstack ships an update every 6 days, and Outflow every 5 days. Most recently, Sinkstack was updated on November 10, 2026 and Outflow on November 10, 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.*