Comparison

Nickel Navigator vs Allergy Tracker°

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

Head to head
About

Nickel Navigator

This app helps individuals follow a low-nickel diet by providing detailed nickel content data for over 800 foods. Users can explore food groups, search for specific items, and estimate daily intake with a food journal. It offers reliable statistics and does not require an internet connection.

Highlights
  • Nickel content data for 800+ foods
  • Serving size consideration
  • Food group exploration
  • Searchable food database
  • Nickel content variation analysis
  • Food journal for daily intake estimation
  • Offline functionality
Features
Read full description

Nickel Navigator is a support tool for individuals on a low-nickel diet. It presents nickel data for over 800 foods from hundreds of national food studies and scientific articles, while taking serving size into consideration. Explore the food groups to see which foods are highest and lowest in nickel, or search for a food. Drill down into the data to understand how a food's nickel content varies, and the reliability of the statistics for that food. Estimate your daily nickel intake using the food journal. For more information, please see the User Guide inside the app. Disclaimer: This app is not intended to replace the advice of a medical professional. See a medical professional first for allergy testing, personalized advice, and to rule out other causes of your symptoms. If you need support beyond what the nickel data can provide, please reach out to a medical professional. Rebelytics does not provide medical advice. No internet connection is required. This app is free and is available as-is and in English only.

About

Allergy Tracker°

Monitor your allergy journey by tracking symptoms, triggers, and treatments. Visualize your progress, identify patterns, and generate shareable reports for your doctor. Personalize your experience by defining custom symptoms and treatments.

Highlights
  • Track symptoms
  • Add triggers
  • Track treatments
  • Write notes
  • Visualize progress
  • Generate reports
  • Define custom symptoms/treatments
Features
Read full description

Your allergy progress at a glance. Track your symptoms, triggers and treatments, take notes and visualize it! Want to share it with your doctor? No problem, just generate a printable report! Want a personalized experience? Define your own symptoms and treatments! HOW ALLERGY TRACKER° WORKS - Track your symptoms - Add any triggers - Track your treatments - Write notes - Have an easy overview of how you are doing - Recognize patterns - Analyze your statistics over time - Create PDF or CSV reports and share them with your doctor - Define your own symptoms and treatments - Collect new achievements - Stay on track with daily reminders - Lock your journal with Face ID or Touch ID We value your privacy. Your journal entries are just yours, only accessible with your device. Consult with your doctor if you are experiencing any symptoms of an illness. This software is not a replacement of a medical treatment. It is intended for informational purposes only and comes with no warranty. You can read the terms of use and privacy policy here: http://adamcziko.com/allergy-tracker-privacy-policy-and-terms-of-use/ The app includes a premium subscription possibility. The subscription is automatically renewed after each subscription period. Want to get to know more about your current subscription, or you want to cancel it? You can get all the information by visiting the following page: https://support.apple.com/en-us/HT202039

Screenshots

Nickel Navigator4 screens
Allergy Tracker°4 screens

Verdict

The call

The clearest difference is in-app purchases: Nickel Navigator at none against Allergy Tracker°'s 6. Nickel Navigator also leads on rating (4.8 vs 4.4). Allergy Tracker°'s advantage is update cadence (every 2 months vs every 11 months) and ratings volume (158 vs 20). 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. Allergy Tracker° sells 5 in-app purchases, starting at $9.99 per month. Nickel Navigator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Nickel Navigator holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Allergy Tracker° has 158 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 90% of Nickel Navigator's written reviews are positive against 82% of Allergy Tracker°'s.

UpkeepUpdate frequency

Nickel Navigator ships an update every 11 months, Allergy Tracker° every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard6 real differences · 4 level
Nickel Navigator versus Allergy Tracker°: the parameters behind the verdict, then further details
ParameterNickel NavigatorAllergy Tracker°
PriceFreeFree
Rating4.8 (20 ratings) — better4.4 (158 ratings)
Positive reviews90.0% of reviews — better82.2% of reviews
Number of ratings20158 — better
Update frequencyEvery 11 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size3 MB45 MB
Age rating12+12+
DeveloperRebelytics R&D Inc.Adam Cziko

Customer experience

Nickel Navigator

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

Allergy Tracker°

All ratings157 ratings
Positive80.9%
Neutral14.0%
Negative5.1%
Written reviews135 reviews
Positive82.2%
Neutral13.3%
Negative4.4%

Bugs and requests

Nickel Navigator

Not enough reviews yet to summarise bugs or requests.

Allergy Tracker°

Reported bugs

2 issues
  • Login screen freezes
  • Incompatible with older devices

Requested features

4 requests
  • Add photo upload capability
  • Improve graphing and charting features
  • Allow more than one entry per day
  • Provide more detailed allergy level information

In-app purchases

None

Nickel Navigator

No in-app purchases

5 purchases

Allergy Tracker°

Subscriptions5
  • Monthly Plan7 Days trial2 variants$9.991 Month
  • Special Annual Plan7 Days trial$9.991 Year
  • Monthly Plan$9.991 Month
Show 2 more
  • Annual Plan$9.991 Year
  • Annual Plan7 Days trial$39.991 Year

Questions

Is Nickel Navigator free?
Nickel Navigator is free to download, with no in-app purchases.
Is Allergy Tracker° free?
Allergy Tracker° is free to download, with in-app purchases available.
Which has better reviews, Nickel Navigator or Allergy Tracker°?
Nickel Navigator is rated higher. Nickel Navigator averages 4.8 out of 5 from 20 ratings, while Allergy Tracker° averages 4.4 from 158 ratings.
Do Nickel Navigator or Allergy Tracker° have ads?
Neither Nickel Navigator nor Allergy Tracker° shows ads.
Which is updated more often, Nickel Navigator or Allergy Tracker°?
Nickel Navigator ships an update every 11 months, and Allergy Tracker° every 2 months. Most recently, Nickel Navigator was updated on October 26, 2026 and Allergy Tracker° on October 27, 2026.

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