Comparison

Spectrometry vs DAC App

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

Head to head
About

Spectrometry

This application allows students and teachers to conduct spectrometry experiments using a wireless spectrometer. It measures and analyzes absorbance, transmittance, and fluorescence, supporting full spectrum analysis and Beer's law experiments. The software offers tools for calibration, comparison, and data plotting for educational purposes.

Highlights
  • Measure absorbance, transmittance, fluorescence
  • Full spectrum analysis
  • Beer's law and kinetics experiments
  • Compare multiple spectra
  • Calibrate dark and reference spectra
  • Plot absorbance and transmittance
  • Determine unknown concentration
Read full description

PASCO Spectrometry is specifically designed for all levels of students and teachers to integrate spectrometry into the teaching and learning of physics, chemistry and biology. Simply connect a PASCO Wireless Spectrometer (PS-2600) and insert a solution to measure absorbance, transmittance and fluorescence of solutions. The Spectrometry software specifically supports full spectrum analysis along with Beer’s law and kinetics experiments. Use a PASCO Fiber Optics Cable (PS-2601) to easily analyze the spectrum of light emissions.   Key features: • Measure and analyze intensity, absorbance, transmittance and fluorescence. • Auto-set the integration time to determine optimum spectrum • Compare multiple spectra to each other and to a set of reference lines of common elements including Hydrogen, Helium, Mercury and more • Quickly calibrate dark and reference spectra for solution spectrometry • Plot absorbance and transmittance on the same graph • Apply a linear fit to determine relationships • Determine unknown concentration based on standard curves and user feedback • Calculate inverse and natural logarithmic data with built-in calculator functions • Annotate the graph • Take Snapshots of pages for journaling and assessments Common user experience across platforms: Spectrometry provides the same user experience for tablets and computers. No matter the mix of technology in the classroom or the school, teachers and students all share the same user experience--placing the learning experience in the forefront and simplifying classroom management. Awards: • 2015 SIIA CODiE award, Best Education App for a Mobile Device (Finalist) • 2015 BETT award, Digital Devices (Finalist) for the Spectrometer + Spectrometry app Equipment and accessory: The Wireless Spectrometer (PS-2600) and the Fiber Optic Accessory (PS-2601) can be found at pasco.com/spectrometer About PASCO: PASCO Scientific brings a rich history of innovation and support for science education, with 50 years of service to educators around the world.

About

DAC App

This free application simplifies the recording of student audio responses for specific AP exams. It streamlines the process for both students and proctors, and automatically uploads audio files for school staff. Designed for use on school-issued iPads.

Highlights
  • Record audio responses for AP exams
  • Simplify recording process
  • Intuitive interface for students
  • Streamline post-exam tasks
  • Direct upload of audio files
  • Designed for school-owned iPads
Read full description

The Digital Audio Capture (DAC) app is a free app developed by College Board and ETS to use for recording students’ audio responses for the AP Music Theory Exam and AP French, German, Italian, and Spanish Language and Culture Exams. This app has been developed to simplify the recording process for students and proctors, utilizing current technology that is intuitive to most students. It streamlines post-exam tasks for school staff by directly uploading student audio files after recording. School staff will follow the instructions in the 2025-26 AP Exam Instructions book to administer an exam using the DAC app. NOTE: The DAC app is limited for use on school-owned and -controlled iPad tablets (iOS 15.0 and above). Schools must update to the 2026 version of the DAC app; previous versions of the app will not work in 2026.

Verdict

The call

The clearest difference is review sentiment: Spectrometry at 100% against DAC App's 20%. Spectrometry also leads on rating (4.0 vs 1.8) and iOS requirement (11.0 vs 15.0). DAC App's advantage is ratings volume (16 vs 4). On price, update cadence, 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

Spectrometry holds the better App Store score, 4.0 against 1.8. Both are backed by a comparable volume of ratings — 4 and 16 respectively. Written reviews point the same way: 100% of Spectrometry's written reviews are positive against 20% of DAC App's.

UpkeepUpdate frequency

Spectrometry ships an update every 6 months, DAC App every 12 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
Spectrometry versus DAC App: the parameters behind the verdict, then further details
ParameterSpectrometryDAC App
PriceFreeFree
Rating4.0 (4 ratings) — better1.8 (16 ratings)
Positive reviews100.0% of reviews — better20.0% of reviews
Number of ratings416 — better
Update frequencyEvery 6 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPad
Requires iOS11.0 — better15.0
Further details — not scored
Size43 MB16 MB
Age rating4+4+
DeveloperPASCO scientificEducational Testing Service

Customer experience

Spectrometry

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DAC App

All ratings16 ratings
Positive18.8%
Neutral0.0%
Negative81.3%
Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

In-app purchases

None

Spectrometry

No in-app purchases

None

DAC App

No in-app purchases

Questions

Is Spectrometry free?
Spectrometry is free to download, with no in-app purchases.
Is DAC App free?
DAC App is free to download, with no in-app purchases.
Which has better reviews, Spectrometry or DAC App?
Spectrometry is rated higher. Spectrometry averages 4.0 out of 5 from 4 ratings, while DAC App averages 1.8 from 16 ratings.
Do Spectrometry or DAC App have ads?
Neither Spectrometry nor DAC App shows ads.
Which is updated more often, Spectrometry or DAC App?
Spectrometry ships an update every 6 months, and DAC App every 12 months. Most recently, Spectrometry was updated on November 1, 2026 and DAC App on November 2, 2026.

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