Comparison

Implen NanoPhotometer vs Decay Lab

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

Head to head
About

Implen NanoPhotometer

Features
Read full description

The Implen NanoPhotometer App turns your iPhone, iPod Touch or iPad device into a control screen and data saving device for the Implen NanoPhotometer line of spectrophotometer products including the C40, N50, N60 and NP80. Supports following models: 1. NanoPhotometer C40 2. NanoPhotometer N50 3. NanoPhotometer N60 4. NanoPhotometer NP80 https://www.youtube.com/watch?v=oFrfJf7fRX8&feature=youtu.be&spfreload=10 Version: NPOS 4.6 build 16350 (4.6.16350) http://www.implen.com

About

Decay Lab

This tool simplifies radionuclide decay calculations and radiation unit conversions. It's designed for professionals and students in nuclear medicine and related fields, offering a focused, offline workflow for quick and consistent results.

Highlights
  • Radioactive decay calculations
  • Activity at different times
  • Decay corrections
  • Bq/Ci unit conversions
  • Absorbed/equivalent dose conversions
  • Dose rate conversions
  • Built-in nuclide data
Features
Read full description

DecayLab makes radionuclide decay calculations and radiation unit conversions quick and straightforward. Designed for nuclear medicine professionals, researchers, educators, and students, it provides a clean, focused workflow that works entirely offline. Key features: • Calculate radioactive decay for a wide range of radionuclides • View activity at different reference and calculation times • Apply decay corrections quickly and consistently • Work with Bq, kBq, MBq, GBq and TBq, alongside nCi, µCi, mCi and Ci • Convert absorbed dose in Gy and rad, and equivalent dose in Sv and rem • Convert dose rates per second, minute, hour or day • See one value in every other unit at once, rather than one pair at a time • Access built-in radionuclide half-life data for 1,625 nuclides • Use all calculation features without an internet connection Gray and sievert are kept in separate tables. Converting between them requires a radiation weighting factor, which is a judgement about radiation type rather than a unit conversion, so DecayLab does not offer it. DecayLab is useful for: • Nuclear medicine technologists • Medical physicists • Radiation safety professionals • Researchers and educators • Students in nuclear medicine and related fields Whether you're checking an activity value, preparing calculations for a workflow, or studying radioactive decay, DecayLab keeps the process clear and efficient. Important: DecayLab is a calculation and educational tool. Results should be independently verified before being used in clinical, diagnostic, therapeutic, or safety-critical decisions.

Screenshots

Implen NanoPhotometer4 screens
Decay Lab4 screens

Verdict

The call

The clearest difference is update cadence: Decay Lab at every 4 days against Implen NanoPhotometer's every 3 months. Implen NanoPhotometer's advantage is iOS requirement (10.0 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Implen NanoPhotometer ships an update every 3 months, Decay Lab every 4 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
Implen NanoPhotometer versus Decay Lab: the parameters behind the verdict, then further details
ParameterImplen NanoPhotometerDecay Lab
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size54 MB6 MB
Age rating4+4+
DeveloperImplen Inc.Carlos Uribe

In-app purchases

None

Implen NanoPhotometer

No in-app purchases

None

Decay Lab

No in-app purchases

Questions

Is Implen NanoPhotometer free?
Implen NanoPhotometer is free to download, with no in-app purchases.
Is Decay Lab free?
Decay Lab is free to download, with no in-app purchases.
Do Implen NanoPhotometer or Decay Lab have ads?
Neither Implen NanoPhotometer nor Decay Lab shows ads.
Which is updated more often, Implen NanoPhotometer or Decay Lab?
Implen NanoPhotometer ships an update every 3 months, and Decay Lab every 4 days. Most recently, Implen NanoPhotometer was updated on November 1, 2026 and Decay Lab on October 30, 2026.

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