Comparison

HTReminder vs UNTILL

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

Head to head
About

HTReminder

This app uses AI to scan and read your pool or hot tub water test strips, providing instant chemical level readings. It logs all your tests, offers chemical suggestions, and sets maintenance reminders to keep your water balanced and clean.

Highlights
  • AI Test Strip Scanner
  • Chemical Suggestions
  • Maintenance Reminders
  • Water Chemistry History
  • Multiple Pool/Tub Management
  • Chemical Inventory Tracking
Features
Read full description

Keep track of your hot tub or pool water. HTReminder is a water testing app that uses AI to read your test strips, keeps a log of every test, and reminds you when maintenance is due. Just snap a photo of your test strip and HTReminder reads pH, chlorine, bromine, alkalinity, and hardness levels. Check the readings, fix any value by hand, and save the test. KEY FEATURES • AI Test Strip Scanner — Point your camera at a used test strip and get readings in seconds. Works with common multi-pad test strips; you can always enter values by hand. • Chemical Suggestions — Based on your readings, your water volume and the products you choose, HTReminder suggests amounts to consider. Always follow the directions on your product's label. • Spa & Pool Maintenance Reminders — Set schedules for water testing, filter cleaning, water changes, and shock treatments. Get a notification when a task is due. • Water Chemistry History — Track your pH, chlorine, bromine, alkalinity, and calcium hardness over time. See trends and catch problems before they get expensive. • Multiple Hot Tubs & Pools — Manage water chemistry for your hot tub, swimming pool, spa, or all of them. Each gets its own history, chemical inventory, and maintenance reminders. • Chemical Inventory — Track what pool and spa chemicals you have on hand so you know what to buy before your next water test. WORKS WITH: • Hot tubs and spas (chlorine or bromine) • Swimming pools (above ground and in-ground) • Swim spas and plunge pools • Saltwater pools and hot tubs PERFECT FOR: • Hot tub owners who want an easy log of their water tests • Pool owners tired of squinting at test strip color charts • New hot tub or pool owners learning water maintenance • Pool service professionals managing multiple clients SUBSCRIPTION INFORMATION HTReminder offers multiple auto-renewing subscription tiers (Consumer and Professional, monthly and annual plans). Exact title, length, and price of each plan are displayed on the subscription screen before purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Payment is charged to your Apple Account upon confirmation of purchase. Manage or cancel subscriptions in your Account Settings after purchase. Privacy Policy: https://htremind.com/privacy Terms of Use (EULA): https://htremind.com/terms

About

UNTILL

This app gamifies and rewards users for spending time away from their screens. It offers solo and group modes, where uninterrupted offline time earns points. The core loop encourages users to disconnect and reconnect with others.

Highlights
  • Gamified unscreening
  • Solo and group modes
  • Earn points for offline time
  • SYNC with other users
  • HOST SYNC sessions
  • Focus on human connection
Read full description

UNTILL is a mobile app that gamifies and rewards for how you unscreen. You can unscreen solo. You can unscreen with others around the world. You can unscreen with friends and family right where you are. How you unscreen is how you score points! --- When UNTILL is open the foreground, the FILL timer logs your unscreen time. UNTILL rewards you for FILLs, which are blocks of uninterrupted time. 15 min = 1 FILL point 30 min = 2 FILL 60 min = 5 FILL The FILL timer interrupts and resets when you close UNTILL, open another app in the foreground, or lock your phone. --- Unscreen with others to score SYNC points. Players who SYNC and complete FILLs together, score points together. Create a SYNC that other players join to score HOST points. --- The foundational game loop for UNTILL is: UNSCREEN > SYNC > FULFILL UNSCREEN when you play UNTILL SYNC with others, because it’s more fun to UNSCREEN together! FULFILL and feel rewarded for how you UNSCREEN --- Our purpose is to encourage people to reclaim their Time and Attention, and to value authentic human connection. We envision a world where the benefits of being off-screen outweigh those that tether us to our devices.

Screenshots

HTReminder4 screens
UNTILL4 screens

Verdict

The call

The clearest difference is review sentiment: UNTILL at 100% against HTReminder's 0%. UNTILL also leads on rating (5.0 vs 3.6) and in-app purchases (none vs 6). HTReminder's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, update cadence and ads 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

Both are free to download. HTReminder sells 6 in-app purchases, starting at $1.99 per month. UNTILL asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

UNTILL holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 0% of HTReminder's written reviews are positive against 100% of UNTILL's.

UpkeepUpdate frequency

HTReminder ships an update every 6 days, UNTILL every 10 days. Both last shipped on November 9, 2026.

Scorecard7 real differences · 3 level
HTReminder versus UNTILL: the parameters behind the verdict, then further details
ParameterHTReminderUNTILL
PriceFreeFree
Rating3.6 (5 ratings)5.0 (15 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings515 — better
Update frequencyEvery 6 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size96 MB75 MB
Age rating17+12+
Developerenoch bryantUntill, LLC

Customer experience

HTReminder

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

UNTILL

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

HTReminder

Subscriptions6
  • Consumer Monthly7 Days trial$1.991 Month
  • Professional Basic Monthly$9.991 Month
  • Consumer Yearly7 Days trial$19.991 Year
Show 3 more
  • Professional Plus Monthly$19.991 Month
  • Professional Basic Yearly$99.991 Year
  • Professional Plus Yearly$199.001 Month
None

UNTILL

No in-app purchases

Questions

Is HTReminder free?
HTReminder is free to download, with in-app purchases available.
Is UNTILL free?
UNTILL is free to download, with no in-app purchases.
Which has better reviews, HTReminder or UNTILL?
UNTILL is rated higher. HTReminder averages 3.6 out of 5 from 5 ratings, while UNTILL averages 5.0 from 15 ratings.
Do HTReminder or UNTILL have ads?
Neither HTReminder nor UNTILL shows ads.
Which is updated more often, HTReminder or UNTILL?
HTReminder ships an update every 6 days, and UNTILL every 10 days. Most recently, HTReminder was updated on November 9, 2026 and UNTILL on November 9, 2026.

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