Comparison

SiDiary vs Carb Unit Diary for Diabetics

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

Head to head
About

SiDiary

This app helps manage diabetes by logging blood glucose, blood pressure, medication, and carbohydrate intake. It offers data entry, statistical graphics, trend analysis, and synchronization with a desktop version.

Highlights
  • Blood glucose logging
  • Blood pressure tracking
  • Medication and carbohydrate entry
  • Statistical graphics and trend analysis
  • Data synchronization with desktop
  • Support for various glucose meters
  • Customizable data types and units
Features
Read full description

With 'SiDiary iPhone' you are able to keep your diabetes logbook (blood glucose levels, blood pressure, medication, carbohydrates, etc.) without the slightest effort as you are already used to from the pc-version of SiDiary 6. 'SiDiary iPhone' provides you also with: - easiest entry of all data with the numeric keypad - all data can be tracked with a scrollable input mask - clearly arranged display of your daily data in SiDiary's typical style - the ability to read data from different meters: AktivMed GlucoChek Gold, Beurer AS87, AS97, BC57, BM57, BM77, BM85, BF600, BF700, BF710, BF800, BF850, GS485, GL50 Evo BLE, GL49, Cignus Profi Line BLE, Fora Diamond Mini, Diamond Mini BLE, Fora 6Connect, Wellion GALILEO GLU/KET BTE, Wellion LEONARDO GLU/KET BTE, Wellion NEWTON GDH-FAD BTE - lots of statistic-graphics (pie chart, line graph, modal day and detailed statistic) - trend analysis (how was the progress of your therapy in the last days/weeks/months?) - fast synchronization of your data with 'SDiary Online', from where you are able to print your data stand-alone from your operating system or synchronize the data with your desktop computer version of SiDiary - user defined data types, which you have defined in your pc-version can also be used on the iPhone after a synchronization with 'SiDiary Online' - you can adjust the language settings to German, English, etc. - blood glucose values can be entered in mg/dl or mmol/l - body weight can be entered in kg or lbs - carbohydrates can be entered in gram or any other exchange unit (such as BE/KE, etc.) - date format dd.mm or mm-dd - time format 24h or am/pm - data rows that you don't want to use can be hided You can use 'SiDiary iPhone' stand-alone, but this version can also enhance the pc-version - e.g. you can download readings from your blood glucose meter, insulin pump, blood pressure meter or pedometer with your pc-version and enter additional data on the way in your iPhone version. After synchronizing both the desktop computer and your iPhone with 'SiDiary Online' all of your data will be merged into one logbook. Since synchronization with 'SiDiary Online' will be started manually - you always have the full control of possible costs for your online connection.

About

Carb Unit Diary for Diabetics

This app helps manage diabetes by tracking carbohydrate units in meals and physical activities. It offers a large database of food items and exercises, with integrations for Apple Watch and Apple Health. The goal is to simplify nutrition management for better blood sugar control.

Highlights
  • Carb unit tracking for diabetics
  • Food and meal logging
  • Physical activity documentation
  • Step counter with calorie calculation
  • Apple Watch & Apple Health integration
  • Voice Over support
Features
Read full description

Your mobile diabetes diary for carb units: managing your nutrition alongside your daily activities has never been simpler. Always in your pocket, wherever you are. The American Diabetes Association recognizes carb counting as a key tool for managing blood glucose. ≡ AT A GLANCE ≡ ▶ Mobile diary for carb-counting with diabetes ▶ Foods, meals and any physical activity in one place ▶ Easy, quick meal planning for everyone who values more choice and variety ▶ Made for long-term weight management and continuous, personal documentation ▶ Tens of thousands of foods and drinks, ready to use ▶ Step counter with automatic calorie calculation ▶ Choose from 900 physical activities to document your exercise ▶ Apple Watch and Apple Health integration ▶ Full support for VoiceOver ≡ CARB UNIT COUNTING — MADE SIMPLE ≡ Carb counting: 15 g carb serving, 12 g bread unit, 10 g carb unit. Counting carb units (or bread units in some regions) is a simple, powerful tool for meal planning with diabetes — and it makes it easier to enjoy a more diverse set of foods throughout the day. «Carb Unit Diary» helps you keep track of the carbohydrates in the foods you eat, giving you full control over the whole meal-planning process. Better meals and more transparency mean steadier blood sugar levels throughout the day. That's why «Carb Unit Diary» helps you review entire days and plan across whole weeks — simple, practical and quick to use, everywhere in life. ************** PRO Membership «Carb Unit Diary» is available as a free version with a paid upgrade to PRO. If you start a membership, payments will be charged to your App Store account at confirmation of purchase. Membership subscriptions automatically renew at the end of the chosen period (1 month/3 months/12 months) for the same price (= no price increases for existing subscriptions) until you cancel. You can turn off auto-renewal up to 24 hours before the end of the subscription period in your Account Settings. When you cancel auto-renewal, access to the PRO features will not expire immediately — you keep access until the end of the current payment period. Terms and Privacy Policy: http://foodlabelling.net/privacy

Screenshots

SiDiary4 screens
Carb Unit Diary for Diabetics4 screens

Verdict

The call

The clearest difference is in-app purchases: SiDiary at none against Carb Unit Diary for Diabetics's 8. SiDiary also leads on rating (4.4 vs 4.2) and iOS requirement (11.0 vs 18.5). Carb Unit Diary for Diabetics's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (24 vs 7). On price, review sentiment, 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. Carb Unit Diary for Diabetics sells 8 in-app purchases, starting at $2.49 per 7 days. SiDiary asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SiDiary holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 7 and 24 respectively. Written reviews point the same way: 56% of SiDiary's written reviews are positive against 55% of Carb Unit Diary for Diabetics's.

UpkeepUpdate frequency

SiDiary ships an update every 4 months, Carb Unit Diary for Diabetics every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
SiDiary versus Carb Unit Diary for Diabetics: the parameters behind the verdict, then further details
ParameterSiDiaryCarb Unit Diary for Diabetics
PriceFreeFree
Rating4.4 (7 ratings) — better4.2 (24 ratings)
Positive reviews56.3% of reviews — better55.2% of reviews
Number of ratings724 — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPod — betteriPhone
Requires iOS11.0 — better18.5
Further details — not scored
Size34 MB350 MB
Age rating4+4+
DeveloperSinovo Ltd. & Co. KGJommi UG (haftungsbeschrankt)

Customer experience

SiDiary

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews32 reviews
Positive56.3%
Neutral15.6%
Negative28.1%

Carb Unit Diary for Diabetics

All ratings24 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews29 reviews
Positive55.2%
Neutral17.2%
Negative27.6%

In-app purchases

None

SiDiary

No in-app purchases

8 purchases

Carb Unit Diary for Diabetics

Subscriptions7
  • 1 Week PRO$2.497 Days
  • 1 Month Access$6.491 Month
  • Quarterly Offer$10.993 Months
Show 4 more
  • 3 Months Full Access$12.953 Months
  • Yearly Offer$21.991 Year
  • 12 Months Full Access$25.001 Year
  • PRO Access3 Days trial$25.001 Year
One-time1
  • Lifetime PRO Access$49.99

Questions

Is SiDiary free?
SiDiary is free to download, with no in-app purchases.
Is Carb Unit Diary for Diabetics free?
Carb Unit Diary for Diabetics is free to download, with in-app purchases available.
Which has better reviews, SiDiary or Carb Unit Diary for Diabetics?
SiDiary is rated higher. SiDiary averages 4.4 out of 5 from 7 ratings, while Carb Unit Diary for Diabetics averages 4.2 from 24 ratings.
Do SiDiary or Carb Unit Diary for Diabetics have ads?
Neither SiDiary nor Carb Unit Diary for Diabetics shows ads.
Which is updated more often, SiDiary or Carb Unit Diary for Diabetics?
SiDiary ships an update every 4 months, and Carb Unit Diary for Diabetics every 3 weeks. Most recently, SiDiary was updated on November 1, 2026 and Carb Unit Diary for Diabetics on November 3, 2026.

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