King vs TVPS Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
King
This application assists individuals with eye movement deficits stemming from neurological impairment. It facilitates practice with an oculomotor program, presenting number targets for reading aloud to improve vision-related symptoms after brain injury. The program offers adjustable speed settings and tracks progress.
- Oculomotor program practice
- Dynamic number target presentation
- Adjustable speed settings
- Instant outcome measures
- Compliance monitoring
- Requires existing account
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King-Devick Recovery Practice is the companion iPad App for the K-D Recovery Acceleration Program (K-D RAP) and helps individuals with eye movement deficits as a result of neurological impairment. Why K-D Recovery Acceleration Program? Following a brain injury, up to 90% of individuals experience vision-related symptoms. K-D RAP is a web and app-based oculomotor program. The individual reads aloud dynamically presented number targets quickly on a computer or iPad. Speed settings are easily adjusted and increased with ongoing practice. K-D RAP provides instant outcome measures and compliance monitoring over the course of recovery. About this App This app can only be used with an existing King-Devick Recovery Acceleration Program account and requires internet access to function. King-Devick Recovery Practice is intended for practicing individuals. It has been validated on iPads with a 9.7" display or larger.
TVPS Calc
This application simplifies administering and analyzing TVPS-4 tests. It allows for complete or partial test completion, raw score entry, and detailed results visualization including age and percentile equivalents. Generate and share PDF reports, and maintain a history of past tests, all stored offline for data confidentiality.
- Complete or partial TVPS-4 tests
- Raw score entry
- Results visualization (age, percentile)
- PDF report generation
- Test history and search
- 100% offline data storage
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Key Features: - Complete or Partial Tests: Administer the TVPS-4 with flexibility, using a grid that complies with ATP standards for an accurate and reliable evaluation. You can also pause a test to resume it later. - Raw Score Entry: Enter the scores obtained during past evaluations without complication. - Results Visualization: Access a detailed analysis of scores, including raw score, corrected score, equivalent age, percentile, for a complete understanding of the evaluated visual perceptual abilities. - PDF Reports: Generate and instantly share interpretation reports, facilitating communication between professionals and with patients or their families. - Save and History: Keep a record of past tests for easy tracking and quick searching. Data storage is 100% offline in full respect of the confidentiality of health data. The TVPS Calc application is a tool for calculation and visualization support, TVPS Calc is not a diagnostic tool. It is intended to complement the use of official ATP® TVPS-4 resources and materials, and should be used by trained professionals.
Screenshots
Verdict
The clearest difference is price: King at Free against TVPS Calc's $14.99. King also leads on iOS requirement (11.0 vs 13.0). TVPS Calc's advantage is update cadence (every 2 weeks vs every 19 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
King is free to download; TVPS Calc costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
King ships an update every 19 months, TVPS Calc every 2 weeks. The most recent releases landed on October 7, 2026 and October 27, 2026 respectively.
| Parameter | King | TVPS Calc |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 19 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 178 MB | 25 MB |
| Age rating | 4+ | 17+ |
| Developer | King-Devick Test, LLC | Dokitek |
Customer experience
King
TVPS Calc
In-app purchases
King
No in-app purchases
TVPS Calc
No in-app purchases









