Reaction Lab vs CDPD App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Reaction Lab
Measure and improve your response speed with a suite of scientifically-inspired tests. Track progress over time with detailed analytics and gain insights into your performance in various situations. Designed for focus and privacy, all data stays on your device.
- Multiple reaction time test types
- Visual, audio, and haptic cues
- Grip-release and motion-based tests
- Dual-task and fatigue tracking
- Detailed session summaries and trend charts
- On-device data privacy
- Offline functionality
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Reaction Lab is a fast, accurate reaction-time testing suite built to help you measure and understand how quickly you respond in different situations. Whether you’re training for sports, improving focus, or tracking performance over time, Reaction Lab gives you clean, scientifically-inspired tests and easy-to-read analytics—right on your iPhone. Test Your Reaction Time in Multiple Ways Reaction time isn’t just one thing. Reaction Lab includes multiple test types designed to measure different pathways and skills: • Simple Visual Tap – Tap as soon as a visual stimulus appears • Choice Reaction – Respond to directional or on-screen prompts with speed and accuracy • Audio Reaction – React to sound cues for “eyes-off” testing • Haptic Reaction – React to vibration cues with no visuals or audio • Grip-Release (Inhibitory Control) – Hold, then release as fast as possible when prompted • Motion Reaction – React by moving the phone (tilt/lift/rotate) • Dual-Task Under Load – React while performing a secondary task to measure real-world performance • Fatigue Drift – Track how reaction time changes over a continuous timed session • Anticipation vs Reaction – Detect premature responses and impulse control patterns • Asymmetry Testing – Compare dominant vs non-dominant performance Track Progress Over Time Reaction Lab automatically saves your sessions and turns raw reaction data into meaningful insights: • Session summaries: median, average, best, worst, variability • Accuracy metrics: false starts, errors, timeouts • Trend charts by test type over 7 / 30 / 90 days • Per-session breakdowns across every trial Clean, Focused, Tool-Like Design Reaction Lab is built to be simple, fast, and distraction-free: • Large touch targets and high-contrast test screens • Clear trial progress indicators • Instant feedback on mistakes or false starts • Smooth navigation between tests, history, insights, and settings Fully On-Device and Private Your data stays on your device. • No accounts • No cloud sync required • No tracking • Works offline If you’ve ever wondered how your reaction time changes with training, fatigue, stress, or consistency—Reaction Lab gives you the tools to measure it. Download Reaction Lab and start testing. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://anthonyharveyapps.com/privacy-policy-reaction-lab
CDPD App
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Seu treino personalizado usando a metodologia do CDPD que vem ajudando atletas de todos os niveis a 12 anos. Sem precisar de treinador, sem pensar no que fazer, o app monta seu plano baseado no seu objetivo, equipamento e nível. - Wizard inteligente: 3 minutos e você tem um plano completo. - Treinos adaptados ao seu equipamento: corpo livre, halteres, academia - Os exercícios são pensados se você tiver problema de saúde e lesões - Modo execução guiada: timer, séries, repetições, passo a passo - Métricas pós-treino: esforço (Borg), frequência cardíaca, duração - Insights semanais: evolução e dicas personalizadas Baseado no método CDPD - 12 anos de preparação física Termos de Uso: https://app.cdpd.com.br/termos.html Política de Privacidade: https://app.cdpd.com.br/privacidade.html
Screenshots
Verdict
The clearest difference is update cadence: CDPD App at every 3 days against Reaction Lab's every 7 months. CDPD App also leads on iOS requirement (16.4 vs 18.0). On price, 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
Both are free to download. Reaction Lab sells 2 in-app purchases, starting at $1.99 per month and CDPD App sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Reaction Lab ships an update every 7 months, CDPD App every 3 days. The most recent releases landed on September 26, 2026 and October 4, 2026 respectively.
| Parameter | Reaction Lab | CDPD App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 22 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Anthony Harvey | Guilherme Lorenz |
In-app purchases
Reaction Lab
- React Fast Monthly3 Days trial$1.991 Month
- React Fast Yearly3 Days trial$4.991 Year
CDPD App
- Plano Mensal$2.991 Month
- Monthly subscription14 Days trial$3.991 Month
- Assinatura trimestral14 Days trial$9.993 Months
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- Assinatura Anual14 Days trial$39.991 Year









