tValue vs Sinograms
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tValue
Calculate unpaired Student t Values quickly using mean, standard deviation, and sample size. It also supports calculating t values for differences from zero or a specified value. Use difference values for Set 1 and leave Set 2 blank for paired t tests.
- Calculate unpaired Student t Values
- Calculate t values for difference from zero
- Calculate t values for difference from specified value
- Supports paired t tests
- Input mean, standard deviation, and n
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tValue can be used to quickly calculate unpaired Student t Values given two sets of mean, standard deviation and n. t values for difference from zero or other specified value can be calculated. Use the difference values for Set 1 and leave Set 2 blank for a paired t test.
Sinograms
Explore over 10,300 Chinese characters with detailed information, including stroke order, pronunciation, and usage examples. Practice writing characters and learn about the fundamentals of Chinese writing.
- 10,300+ simplified and traditional characters
- Customizable character grid browsing
- Search and filter functionality
- Favorites list
- Stroke order decomposition
- Detailed character information
- Writing practice module
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● More than 10.300 characters, in their simplified and traditional forms ● Browse the characters in a customisable grid (groups, order, levels) ● Search and filter ● Favorites list ● Usage frequency, HSK and Table of General Standard Chinese Characters (通用 规范 汉字 表) level ● Strokes order - stroke by stroke decomposition ● Detailed information for each character (pronunciation, translation, decomposition, etymology and usage examples) ● Writing practice to master every character ● General information about Chinese writing - basic strokes, order and difficult characters English, Français, Español, Italiano, Deutsch, Русский язык, ภาษาไทย, Tiếng Việt, 한국어, हिन्दी, 汉语, 日本語, العربية
Screenshots
Verdict
The clearest difference is price: tValue at Free against Sinograms's $3.99. tValue also leads on rating (5.0 vs 4.7). Sinograms's advantage is update cadence (monthly vs every 9 months) and device support (3 vs 1). On ads and in-app purchases 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
tValue is free to download; Sinograms costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
tValue holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
tValue ships an update every 9 months, Sinograms monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | tValue | Sinograms |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 5.0 (1 ratings) — better | 4.7 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 9 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 18.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 222 MB |
| Age rating | 4+ | 4+ |
| Developer | David Bourne | Samuel REAUD |
Customer experience
tValue
Sinograms
In-app purchases
tValue
No in-app purchases
Sinograms
No in-app purchases
