How is the quality of Casio?
Casio receives mixed reviews, with 893 positive mentions and 716 negative mentions. Customer perception improved gradually from late 2025 to mid-2026, as average ratings rose from 3.07 stars in September 2025 to 3.66 stars in April 2026. Customers praise the durability and reliability of Casio watches, especially the G-Shock line, for consistent timekeeping and rugged build. Complaints focus on the companion app, particularly Bluetooth syncing issues, app instability, and missing features. Some users like the app’s simplicity and design, but many find it unreliable, poorly updated, or misleading in data handling. The physical product quality remains strong, but the digital experience is a growing source of frustration.
What customers praise
Casio watches are praised for their durable build and long-term reliability. Time accuracy is maintained over years of use. The watches resist daily wear, water exposure, and drops. Users say Casio’s durability exceeds that of other brands. Several customers report owning multiple Casio watches over the years without repairs. The interface is simple and easy to use.
What customers said:
- „It's nice to know that the time is accurate“
- „works so well ya don't even have to touch the watch“
- „This works perfectly with my new GW-BX5600.“
Common complaints
Users report frequent disconnections between the Casio watch and phone through the Casio app, causing lost settings and incorrect time displays. Some believe the app intentionally lets time drift when Bluetooth is off to force reconnection. The 'Find My Phone' feature has a short range and does not work consistently. Key features like the O2 sensor and nightly recharge do not function as advertised.
What customers said:
- „I HATE it when my watch if off time because I turned my bluetooth off“
- „The GPRH1000 O2 sensor, Nightly Recharge option & solar charger on the watch DO NOT…“
„The GPRH1000 O2 sensor, Nightly Recharge option & solar charger on the watch DO NOT FUNCTION!“
- „the app is so weak and of no use“
How it has changed over time
User feedback indicates the Casio app quality has declined over time. Early versions had detailed model databases and full functionality. Recent updates removed those features and added a less useful social tool. The app redesign caused confusion, with users losing access to critical information and functions. Some reviewers say the app now feels outdated and underdeveloped. This follows the discontinuation of the G-Shock Connected app, leaving many watches without proper support.
What customers said:
- „after the gshock connected app was discontinued“
- „The previous app had a full database of all watches and models, all are now gone.“
- „I constantly have "NO DATA" that appears on the watch“
Practical takeaways
Casio watches are durable and accurate. The app experience varies. Automatic time sync, activity tracking, and location sharing may have issues. Check recent reviews for the specific model and app compatibility. Some users recommend using the watch without the app. Core timekeeping and physical features remain highly rated.
What customers said:
- „I like syncing my watch for correct time adjustments“
- „the time walking off sync is intentional to force you to reconnect to their app“
- „Great dependable watch!!“
Over time
Data as table
| Month | Avg. rating | Count |
|---|---|---|
| 2025-09 | 3.07 | 45 |
| 2025-10 | 2.86 | 36 |
| 2025-11 | 3.20 | 40 |
| 2025-12 | 3.43 | 90 |
| 2026-01 | 3.59 | 100 |
| 2026-02 | 3.50 | 125 |
| 2026-03 | 3.55 | 119 |
| 2026-04 | 3.66 | 108 |
| 2026-05 | 3.46 | 126 |
| 2026-06 | 3.41 | 140 |
| 2026-07 | 3.41 | 139 |
| 2026-08 | 3.64 | 66 |
Sentiment over time
Data as table
| Month | Positive | Neutral | Negative | Count |
|---|---|---|---|---|
| 2025-09 | 42% | 9% | 49% | 45 |
| 2025-10 | 36% | 6% | 58% | 36 |
| 2025-11 | 43% | 10% | 48% | 40 |
| 2025-12 | 49% | 12% | 39% | 90 |
| 2026-01 | 59% | 5% | 36% | 100 |
| 2026-02 | 48% | 10% | 42% | 125 |
| 2026-03 | 57% | 8% | 35% | 119 |
| 2026-04 | 57% | 3% | 40% | 108 |
| 2026-05 | 57% | 6% | 37% | 126 |
| 2026-06 | 50% | 6% | 44% | 140 |
| 2026-07 | 53% | 8% | 40% | 139 |
| 2026-08 | 59% | 6% | 35% | 66 |
Customer voices
Short excerpts - full reviews are available at the original source.
„when i lose connection between watch and phone, I lose all settings“
„the watch should save the settings“
„the connection, layout of watch settings for Bluetooth connected ones are so simple to use“
„as usual Casio operating at a different league“
„It works great to set up everything on your watch.“
„the app tracks steps and makes it fun to watch your progress“
„This app is selling your location data.“
„My GA B2100 would not sync time in background“
What Reddit users discuss
Below are extracts from Reddit which discuss quality in more detail - each linked to the original thread.
„Has a countdown timer with autorepeat, 5 multi-function alarms, 24 hour stopwatch (as opposed the 1 hour), dual time, 10 year battery, larger digits, better backlight and easier to use buttons“
Cite this page
Citatio (2026). Casio Quality: customer reviews September 2026. Retrieved 19 August 2026 from https://citatio.ai/casio-reviews/quality/
Data verifiable via our public audit log: Methodology · Transparency