ReadingScreen vs LEST
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
ReadingScreen
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Accurately identify Primary school children who would benefit from reading support, using our fast, fun and intuitive app for teachers and teaching assistants. Based on decades of University of Oxford research into reading development. ReadingScreen assessments consist of two tests measuring different reading skills. The first presents pupils with up to 60 individual words of increasing complexity. The second presents them with up to 34 nonwords. The pupil is asked to read each word or nonword out loud and their responses are marked for accuracy by the adult conducting the assessment. If they get 15 answers in a row incorrect, the test ends and they move onto the next test. Each assessment should take 10 minutes or less to complete. Assessments can be interrupted if necessary and will resume from the beginning of the most recent test. To launch an assessment, the adult conducting the assessment should scan the QR code for the pupil they want to assess. No personally identifiable information is stored on the device. At the end of an assessment, the data is uploaded to oxedandassessment.com for instant feedback and reports can be generated for classes or year groups. If no internet connection is available, the data can be stored on the device and uploaded at a later date. ReadingScreen is suitable for schools and organisations (UK and international) using English or Welsh as the medium of education.
LEST
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The Letter Sound Test (LeST) tests a personβs ability to sound out single letters and letter combinations.Β - Run a LeST test session in under 10 minutes. - Automated percentile and z-score calculations for graphemes. - Practice marking before you buy. - Hear correct pronunciations of all the letter-sound combinations before you buy. More about the LeST: In order to be able to sound out words, we need to know which sound a letter or letter combination corresponds to. The LeST evaluates which letter(s) a person can sound out in isolation (i.e., not in the context of a word or nonword).Β The LeST is a simple reading aloud task and contains 51 graphemes (single letters and letter combinations). This test can be administered to individual students. At the end of the test, the tester gets an overview of the grapheme a reader can sound out in isolation. The tester may then decide to train the letter-sound-correspondences for the letters that the reader could not sound out correctly. This app has been developed from the LeST literacy assessment tool created by Macquarie University Centre for Reading.
Screenshots
Verdict
The clearest difference is in-app purchases: ReadingScreen at none against LEST's 10. ReadingScreen also leads on update cadence (every 2 months vs every 19 months). LEST's advantage is iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. LEST sells 10 one-off in-app purchases. ReadingScreen asks for nothing beyond the download.
ReadingScreen ships an update every 2 months, LEST every 19 months. The most recent releases landed on September 8, 2026 and September 11, 2026 respectively.
| Parameter | ReadingScreen | LEST |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months β better | Every 19 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 12.0 β better |
| Further details β not scored | ||
| Size | 31 MB | 24 MB |
| Age rating | 4+ | 12+ |
| Developer | OxEd and Assessment Ltd | SCIPILOT PTY LTD |
In-app purchases
ReadingScreen
No in-app purchases
LEST
- 1 LeST Result Sheet$5.49
- 5 LeST Results Sheets$24.99
- 5 LeST Results Sheets$31.99
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- 20 LesT Results Sheets$89.99
- 50 LeST Results Sheets$159.99
- 70 LeST Results Sheets$219.99
- 160 LeST Results Sheets$259.99
- 200 LeST Results Sheets$299.99
- 500 LeST Results Sheets$499.99
- 800 LeST Results Sheets$799.99









