Comparison

Eye Quix vs IntervalTimer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Eye Quix

Enhance your eyesight with fun, quick eye training exercises. Designed for children, adults, athletes, and seniors, this app aims to improve visual acuity and performance. Achieve significant improvements with consistent use.

Highlights
  • Eye training exercises
  • Vision enhancement
  • Suitable for all ages
  • Performance improvement for athletes
  • Computer vision strain relief
Read full description

This mobile app idea began in 2014, as a fun education app and "eye training" for all of us, Trainyoureyes101, was launched on the iOS platform in January 2019. Trainyoureyes 101 was selected by Apple Women’s Entrepreneur Camp in Summer 2019 and now, we are Eye Quix, again with the same goals of enhancing eyesight for all: children, adults who do too much computer work, athletes who want to throw a ball faster, seniors and the curious. We have used this in 180 people and over 97% have 1 or more lines improvement. We have used this app with tennis and baseball players. Read more on our Terms of Use & Privacy Policy here:  https://justforeyeseyequix.com/license-agreement https://justforeyeseyequix.com/privacy-policy-2

About

IntervalTimer

This app provides a minimalist yet powerful interval timer for high-intensity workouts like HIIT, Tabata, and EMOM. It features professional voice guidance, customizable templates, and a clear, large display for easy readability during exercise.

Highlights
  • Professional voice guidance
  • 20+ built-in workout templates
  • Customizable interval presets
  • Extra-large, readable display
  • Three-color phase coding
  • Workout session tracking
Features
Read full description

Every Round, Get Stronger. A minimalist yet powerful interval timer designed for HIIT, Tabata, EMOM, and all high-intensity workouts.  Now featuring 20+ built-in templates and professional voice guidance. Set your intervals in seconds with our precision vertical ruler.  Start training with one tap.  See your countdown from across the room with our extra-large display—perfect for the gym floor or yoga mat. ◆ BUILT FOR REAL WORKOUTS • Professional Voice Guidance: Male and female voice options for Work, Rest, and Round transitions • Haptic feedback for key phase transitions • Pause, resume, and recovery from interruptions • Auto time correction when returning from background • Background audio cues (Coming Soon): Will work seamlessly with your music ◆ READY-TO-USE TEMPLATES • 20+ Professional Templates built-in • Tabata Classic (20s work / 10s rest × 8) • EMOM 10 (Every Minute on the Minute) • Sprint Starter (Quick high-intensity intervals) • Create and save your own custom presets ◆ PRECISION INTERVAL EDITING • Vertical ruler with 1-second precision • Smart haptic feedback on every tick • Floating value display—your finger never blocks the numbers • Adjust Work, Rest, Intervals, and Rounds with intuitive controls ◆ CRYSTAL-CLEAR COUNTDOWN • Extra-large timer digits readable from 10+ feet away • Landscape mode for maximum visibility • Three-color phase coding: Orange (Work) / Blue (Rest) / Purple (Round Rest) • Always-on display keeps the screen active during workouts ◆ COMPLETE WORKOUT TRACKING • Session summary: total time, work time, rest time, completion rate • Local workout history • Review and repeat past sessions ◆ DESIGNED FOR ATHLETES Perfect for HIIT, CrossFit, circuit training, running intervals, boxing rounds, swimming sets, yoga flows, stretching routines, and any activity that needs precise timing. Train smarter. Train harder.  Train with Intervals Timer. emom,gym,fitness,free,custom,simple,stopwatch Privacy Policy :https://hiittimer.pages.dev/Privacy Terms of Service:https://hiittimer.pages.dev/Terms

Screenshots

Eye Quix4 screens
IntervalTimer4 screens

Verdict

The call

The clearest difference is price: IntervalTimer at Free against Eye Quix's $5.99. IntervalTimer also leads on review sentiment (75% vs 58%) and update cadence (every 10 days vs monthly). Eye Quix's advantage is rating (3.9 vs 3.7) and ratings volume (15 vs 3). On 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

CostPrice · In-app purchases · Ads · Monetization

IntervalTimer is free to download; Eye Quix costs $5.99 up front. Eye Quix sells 6 one-off in-app purchases and IntervalTimer sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Eye Quix holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: Eye Quix has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 58% of Eye Quix's written reviews are positive against 75% of IntervalTimer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Eye Quix ships an update monthly, IntervalTimer every 10 days. Both last shipped on October 24, 2026.

Scorecard7 real differences · 3 level
Eye Quix versus IntervalTimer: the parameters behind the verdict, then further details
ParameterEye QuixIntervalTimer
Price$5.99Free — better
Rating3.9 (15 ratings) — better3.7 (3 ratings)
Positive reviews58.3% of reviews75.0% of reviews — better
Number of ratings15 — better3
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFreemium — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size18 MB18 MB
Age rating4+4+
DeveloperJust For EyesPinyipin Technology (Chongqing) Co., Ltd.

Customer experience

Eye Quix

All ratings14 ratings
Positive64.3%
Neutral14.3%
Negative21.4%
Written reviews12 reviews
Positive58.3%
Neutral8.3%
Negative33.3%

IntervalTimer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

6 purchases

Eye Quix

One-time6
  • Eye Tips$0.99
  • EyeQuix Easy$0.99
  • EyeQuix Classic$1.99
Show 3 more
  • EyeQuix Turbo$1.99
  • Eye Relax$1.99
  • EyeQuix$5.99
3 purchases

IntervalTimer

Subscriptions2
  • PRO Monthly $1.99$1.991 Month
  • PRO Annual $19.99$9.991 Year
One-time1
  • Interval Timer Pro Lifetime$39.99

Questions

Is Eye Quix free?
Eye Quix costs $5.99, and also offers in-app purchases.
Is IntervalTimer free?
IntervalTimer is free to download, with in-app purchases available.
Which has better reviews, Eye Quix or IntervalTimer?
Eye Quix is rated higher. Eye Quix averages 3.9 out of 5 from 15 ratings, while IntervalTimer averages 3.7 from 3 ratings.
Do Eye Quix or IntervalTimer have ads?
Neither Eye Quix nor IntervalTimer shows ads.
Which is updated more often, Eye Quix or IntervalTimer?
Eye Quix ships an update monthly, and IntervalTimer every 10 days. Most recently, Eye Quix was updated on October 24, 2026 and IntervalTimer on October 24, 2026.

Other comparisons