Basic Calculator X vs Stava Letter Sounds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Basic Calculator X
This app provides essential arithmetic functions, including square roots and percentages. It allows users to perform multiple calculations sequentially, storing previous results for easy reuse. Users can manage their calculation history by deleting individual entries or clearing all saved data.
- Four arithmetic methods
- Square and square-root functions
- Pi and percentage calculations
- Sequential calculation support
- Calculation history table
- Delete individual/all calculations
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A basic calculator with some useful features. - The four arithmetic methods with positive and negative numbers. square, square-root, pi, percent - You can do several calculations in a row. When you press the equal-sign, the current calculation is stored in the table on the left. These can then be used again in new calculations. - You can delete all saved calculations in the table. Either click on "Delete Individual", and choose which ones you want to delete, or you simply click "Delete All". More information on www.matteappar.se
Stava Letter Sounds
This app offers a playful way to learn reading and writing. Users can hear letter names and sounds as they type, and explore how letters combine to form words.
- Hear letter names and sounds
- Learn letter-sound correspondence
- Form words by combining letters
- Reorder letters to create words
- Playful approach to literacy
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A playful approach to learning to read and write. – Hear the letter names and their sounds as you type. – Learn how letters form words by putting them together and reordering them.
Screenshots
Verdict
The clearest difference is price: Basic Calculator X at Free against Stava Letter Sounds's $2.99. Basic Calculator X also leads on iOS requirement (13.0 vs 16.4). Stava Letter Sounds's advantage is rating (4.0 vs 3.3) and update cadence (fortnightly vs every 25 months). On ratings volume, ads, in-app purchases and device support 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
Basic Calculator X is free to download; Stava Letter Sounds costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stava Letter Sounds holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.
Basic Calculator X ships an update every 25 months, Stava Letter Sounds fortnightly. The most recent releases landed on October 17, 2026 and October 26, 2026 respectively.
| Parameter | Basic Calculator X | Stava Letter Sounds |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 3.3 (3 ratings) | 4.0 (6 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 | 6 — better |
| Update frequency | Every 25 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 1 MB | 78 MB |
| Age rating | 4+ | +4 |
| Developer | Magnus Vernersson | Betareader Sweden AB |
Customer experience
Basic Calculator X
Stava Letter Sounds
In-app purchases
Basic Calculator X
No in-app purchases
Stava Letter Sounds
No in-app purchases
Questions
Is Basic Calculator X free?
Is Stava Letter Sounds free?
Which has better reviews, Basic Calculator X or Stava Letter Sounds?
Do Basic Calculator X or Stava Letter Sounds have ads?
Which is updated more often, Basic Calculator X or Stava Letter Sounds?
Other comparisons
