Comparison

Simple Tax for IOS vs Stack

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

Head to head
About

Simple Tax for IOS

This finance app simplifies tax calculations with an intuitive interface. Easily adjust tax rates with a single tap for quick estimations. Designed for straightforward financial planning.

Highlights
  • Easy-to-use tax calculator
  • One-click tax rate modification
  • Quick estimations
  • Intuitive interface
  • Financial planning tool
Features
Read full description

Easy to use tax calculator. Tax rate can be modified with one click.

About

Stack

Easily track and manage personal finances by categorizing credit and debt across multiple devices. Create separate spaces for different financial situations, share summaries, and use the built-in calculator for complex calculations.

Highlights
  • Categorize credit and debt
  • Create multiple financial spaces
  • Share debt summaries
  • Integrated value calculator
  • Split expenses easily
  • App lock with Face ID/Touch ID
  • Apple Watch app for on-the-go management
Features
Read full description

Stack is the fastest debt management app for iPhone, iPad, Apple Watch and Mac. It enables you to categorize money you are owed and money you owe, and conveniently track and manage your finances across multiple devices. Stack offers the following features: • Spaces: Create multiple Spaces to categorize your debt. For example, you can create a Space for each friend who owes you money. • Add Entries: Add an entry to a Space with one tap. Give each entry a name, quantity, and value. Use a positive value for money you are owed and a negative value for money you owe. Entries in Spaces can be sorted by date, value, or name. • Remove Debt: Removing debt is also straightforward. Tap on the circle on the left side of a debt entry to remove it. If you accidentally removed an entry, you can restore it later, similar to the Reminders app. • Share Debt: You can choose to share the debt of a Space, which generates a list of all debt and the total sum. You can choose if you want to include entries previously marked as complete, and you can choose to include the date of the entry. The date can also be edited. • Value Calculator: You can use the integrated calculator to perform complex calculations and then transfer them directly to the value field. • Split Sum: With this feature, sharing expenses is easy. Just choose the number of parts you want to split a Space's total into, and Stack will automatically calculate the amount of each part. • App Lock: Stack offers Face ID or Touch ID to lock the app, ensuring that only you can access it. • Apple Watch App: You can view, edit, and add new entries on your Apple Watch. No connection to your iPhone is required. • iCloud Sync: All your data is synced between your iPhone, iPad, Apple Watch and Mac. • Privacy: Your data is stored only on your device and in iCloud. The app does not collect any user data, and the developer has no access to it. • Text Field Sizes: You can adjust the name field and the value field sizes to your preference.

Screenshots

Simple Tax for IOS3 screens
Stack4 screens

Verdict

The call

The clearest difference is price: Stack at Free against Simple Tax for IOS's $0.99. Stack also leads on update cadence (every 6 weeks vs every 10 months) and device support (4 vs 2). Simple Tax for IOS's advantage is in-app purchases (none vs 1). On review sentiment, ads and iOS requirement 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

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

UpkeepUpdate frequency

Simple Tax for IOS ships an update every 10 months, Stack every 6 weeks. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
Simple Tax for IOS versus Stack: the parameters behind the verdict, then further details
ParameterSimple Tax for IOSStack
Price$0.99Free — better
Rating—4.3 (6 ratings) — better
Positive reviews92.3% of reviews100.0% of reviews — better
Number of ratings—6 — better
Update frequencyEvery 10 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.6 — better16.0
Further details — not scored
Size0 MB30 MB
Age rating4+4+
DeveloperSaman RazaviLeon Boettger

Customer experience

Simple Tax for IOS

Written reviews13 reviews
Positive92.3%
Neutral7.7%
Negative0.0%

Stack

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Simple Tax for IOS

No in-app purchases

1 purchases

Stack

One-time1
  • Stack+$0.99

Questions

Is Simple Tax for IOS free?
Simple Tax for IOS costs $0.99, with no in-app purchases.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do Simple Tax for IOS or Stack have ads?
Neither Simple Tax for IOS nor Stack shows ads.
Which is updated more often, Simple Tax for IOS or Stack?
Simple Tax for IOS ships an update every 10 months, and Stack every 6 weeks. Most recently, Simple Tax for IOS was updated on October 21, 2026 and Stack on October 15, 2026.

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