Comparison

Sharper Image Smart vs Stackr

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

Head to head
About

Sharper Image Smart

This application enables multiple household members to set and monitor weight loss objectives. It utilizes Bluetooth technology for seamless tracking and can sync data with the Apple Health app if authorized.

Highlights
  • Multiple user support
  • Weight loss goal setting
  • Bluetooth tracking
  • Apple Health sync
  • Effortless tracking
Features
Read full description

Tracker Scale app. This free app allows multiple users in your household to set goals and track weight loss effortlessly through Bluetooth technology. This app support the Apple 'Health' App, If you authorized, we can sync all weight data to you Health app.

About

Stackr

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

Highlights
  • Log peptide and GLP-1 doses
  • Track vials, pens, and other supplies
  • Smart reminders for next doses
  • Home screen widgets
  • Estimated active level charts
  • Multi-peptide stack tracking
  • Reference pages for common compounds
Features
Read full description

Stackr is the all-in-one tracker for your peptide and GLP-1 protocol. Every dose, vial and meal in one place, with the math done for you. KEY FEATURES • Dose tracking and reminders Log a dose in seconds from your Home screen. Run daily, weekly, every-few-days or specific-day schedules, and several protocols at once. Reminders make sure you never miss a dose, and Home Screen widgets show what's next. • Dose calculator Enter your vial strength, water and dose, and see exactly how many units to draw on a U-100 or U-40 syringe. Works in mcg, mg, IU and units. • Supplies and vials Track vials, pens and other supplies. Stackr counts down what's left every time you log and warns you before you run out. • Progress Keep your weight, progress photos and dose history together, with a calendar of taken and missed doses and estimated active levels from your logs. • Food and calories Snap a meal, scan a barcode, search a food or just say what you ate. Stackr tracks calories and protein against your daily plan. • Stackr Coach Ask the AI coach questions about your routine and your meals, any time. • Learn Reference pages for semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, GHK-Cu and 100+ more, with research status and sources. WHY STACKR • Built for GLP-1s and peptides, from one weekly shot to a full stack • Pounds or kilograms, mcg or mg, U-100 or U-40 • Syncs across your devices when you sign in • Message the team directly from Settings Stackr is a personal tracking and educational app. It does not give medical advice, prescribe treatments or tell you which peptide, dose or schedule is right for you. Always talk to a qualified healthcare professional. Active levels and photo-based nutrition values are estimates. SUBSCRIPTION Stackr is free to download. Full access requires a paid Stackr+ subscription. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getstackr.app/privacy

Screenshots

Sharper Image Smart3 screens
Stackr4 screens

Verdict

The call

The clearest difference is review sentiment: Stackr at 72% against Sharper Image Smart's 9%. Stackr also leads on rating (4.4 vs 1.7) and update cadence (every 4 days vs every 10 days). Sharper Image Smart's advantage is in-app purchases (none vs 7) and iOS requirement (8.0 vs 17.0). On price, ratings volume, ads 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

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Sharper Image Smart asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stackr holds the better App Store score, 4.4 against 1.7. Both are backed by a comparable volume of ratings — 244 and 143 respectively. Written reviews point the same way: 9% of Sharper Image Smart's written reviews are positive against 72% of Stackr's.

UpkeepUpdate frequency

Sharper Image Smart ships an update every 10 days, Stackr every 4 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 4 level
Sharper Image Smart versus Stackr: the parameters behind the verdict, then further details
ParameterSharper Image SmartStackr
PriceFreeFree
Rating1.7 (244 ratings)4.4 (143 ratings) — better
Positive reviews8.7% of reviews72.0% of reviews — better
Number of ratings244 — better143
Update frequencyEvery 10 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
Best chart rank—#187 — better
DevicesiPhone, iPod — betteriPhone
Requires iOS8.0 — better17.0
Further details — not scored
Size4 MB88 MB
Age rating4+12+
DeveloperMerchSource, LLCStackr Holdings LLC

Customer experience

Sharper Image Smart

All ratings244 ratings
Positive11.9%
Neutral6.1%
Negative82.0%
Written reviews138 reviews
Positive8.7%
Neutral8.7%
Negative82.6%

Stackr

All ratings143 ratings
Positive86.7%
Neutral1.4%
Negative11.9%
Written reviews25 reviews
Positive72.0%
Neutral4.0%
Negative24.0%

Bugs and requests

Sharper Image Smart

Reported bugs

3 issues
  • App crashes
  • Doesn't work with latest iOS
  • Doesn't save weight/body composition data

Requested features

3 requests
  • Ability to export data
  • Stay logged in
  • Half-inch height options

Stackr

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sharper Image Smart

No in-app purchases

7 purchases

Stackr

Subscriptions7
  • Stackr+ Weekly$7.997 Days
  • Monthly$12.991 Month
  • Stackr+ Yearly$29.991 Year
Show 4 more
  • Stackr+ Yearly$49.991 Year
  • Stackr+ Yearly3 Days trial$49.991 Year
  • Stackr+ Yearly$59.991 Year
  • Yearly3 Days trial$69.991 Year

Questions

Is Sharper Image Smart free?
Sharper Image Smart is free to download, with no in-app purchases.
Is Stackr free?
Stackr is free to download, with in-app purchases available.
Which has better reviews, Sharper Image Smart or Stackr?
Stackr is rated higher. Sharper Image Smart averages 1.7 out of 5 from 244 ratings, while Stackr averages 4.4 from 143 ratings.
Do Sharper Image Smart or Stackr have ads?
Neither Sharper Image Smart nor Stackr shows ads.
Which is updated more often, Sharper Image Smart or Stackr?
Sharper Image Smart ships an update every 10 days, and Stackr every 4 days. Most recently, Sharper Image Smart was updated on October 7, 2026 and Stackr on October 13, 2026.

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