Comparison

Sum Hydration vs NotThat!

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

Head to head
About

Sum Hydration

This app allows users to connect to smart beverage dispensers to create personalized flavored water. Customize your drinks with various flavors and add nutrients like electrolytes and caffeine to meet your health goals. Track your hydration history and make secure payments for your orders.

Highlights
  • Connect via NFC/Bluetooth
  • Personalized flavor selection
  • Nutrient customization (electrolytes, caffeine)
  • Order history tracking
  • Secure in-app payments
Features
Read full description

Whether you're at the gym, office, or on the go, Sum Hydration makes it simple to stay refreshed and healthy. Our app allows you to connect to our advanced beverage dispensers via NFC and Bluetooth, enabling you to create and enjoy personalized flavored water with just a few taps. Sum Hydration offers a revolutionary way to stay hydrated. Here are some features: - Easy Connectivity: Use NFC or Bluetooth to connect to Sum Hydration dispensers seamlessly. - Personalized Flavors: Choose from a variety of delicious flavors to suit your taste. - Nutrient Customization: Add essential nutrients to your water, including electrolytes and caffeine, to meet your hydration and health goals. - Order History: Keep track of your hydration habits and reorder your favorite drinks with ease. - Secure Payments: Make quick and secure payments directly through the app using Stripe.

About

NotThat!

Eliminate restaurant options quickly by comparing two choices at a time. This app helps you decide where to eat by repeatedly narrowing down your choices until a single winner remains. It also supports group decision-making for shared dining experiences.

Highlights
  • Compare two restaurants at a time
  • Eliminate unwanted choices
  • Group decision-making feature
  • Real-time voting for groups
  • View restaurant details (address, hours)
  • Save favorite restaurants
  • View decision history
Features
Read full description

Can't decide where to eat? Stop deciding - start eliminating. NotThat! turns "I don't know, where do YOU want to eat?" into an answer in under a minute. Instead of scrolling endless lists, you see two options at a time and knock out the one you don't want. Repeat until one is left standing. That's your pick. It starts with the hardest everyday decision - where to eat - using real restaurants near you. HOW IT WORKS - Two nearby restaurants go head to head, with photos and ratings - Keep the one you want, wave off the other - swipe, or tap to keep or pass - Repeat until one winner remains - Torn? Compare the two side by side before you choose DECIDE WITH FRIENDS Can't agree as a group? Start a session and send the join link, or read out the 6-character code. Everyone votes from their own phone in real time, rounds are timed, and the winner is a place you all actually landed on together - no more group-chat paralysis. REAL LOCAL FOOD - Real restaurants near you, from live map data - Narrow it down by what you're craving, plus price and distance - Tap the winner for its address, hours, phone, and directions KEEP WHAT YOU LOVE - Save favorites and battle them head to head anytime - "Never show again" hides a place you're done with - Winner history answers "where was that spot last week?" NO ACCOUNT NEEDED Open it and go - no sign-up. Sign in with Apple only if you want your favorites and history synced across devices. No ads, and we don't sell your data. Built to settle more than dinner - restaurants first, more decisions to come. Dinner tonight: decided.

Screenshots

Sum Hydration4 screens
NotThat!4 screens

Verdict

The call

The clearest difference is update cadence: Sum Hydration at weekly against NotThat!'s every 2 months. Sum Hydration also leads on ratings volume (11 vs 2). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sum Hydration against 5.0 for NotThat!. That said, the two scores are not equally well evidenced: Sum Hydration has 11 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Sum Hydration ships an update weekly, NotThat! every 2 months. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
Sum Hydration versus NotThat!: the parameters behind the verdict, then further details
ParameterSum HydrationNotThat!
PriceFreeFree
Rating5.0 (11 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings11 — better2
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size61 MB35 MB
Age rating4+4+
DeveloperSUM LLCNiche Applications, LLC

Customer experience

Sum Hydration

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

NotThat!

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sum Hydration

No in-app purchases

None

NotThat!

No in-app purchases

Questions

Is Sum Hydration free?
Sum Hydration is free to download, with no in-app purchases.
Is NotThat! free?
NotThat! is free to download, with no in-app purchases.
Which has better reviews, Sum Hydration or NotThat!?
Sum Hydration and NotThat! are both rated 5.0 out of 5 on the App Store, from 11 and 2 ratings respectively.
Do Sum Hydration or NotThat! have ads?
Neither Sum Hydration nor NotThat! shows ads.
Which is updated more often, Sum Hydration or NotThat!?
Sum Hydration ships an update weekly, and NotThat! every 2 months. Most recently, Sum Hydration was updated on October 9, 2026 and NotThat! on October 3, 2026.

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