Comparison

BATI Interview Techniques vs SoundLeaf

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

Head to head
About

BATI Interview Techniques

This app provides companion materials for a Behavior Analysis Training course on investigative interviewing. It offers in-app review of documents, printable course materials, and tools for practicing personal history taking and subject interview assessment. Course registration is required to access content.

Highlights
  • In-app document review
  • Printable course materials
  • Personal history practice tool
  • Subject interview assessment tool
  • Companion to Behavior Analysis Training
Features
Read full description

The companion app to Behavior Analysis Training course on Investigative Interview and Interrogation. Includes all documents for in-app review, as well as printable downloads of all course materials. We also have tools to practice taking a personal history and assessing a subject interview. Please note: Prior registration to the course is required. Please contact your course facilitator for the appropriates codes to access meeting content.

About

SoundLeaf

This app provides a premium iOS client for the open-source Audiobookshelf server. It offers a beautiful, intuitive interface for listening to your personal audiobook collection with features like CarPlay support and offline downloads.

Highlights
  • CarPlay support
  • Connect to Audiobookshelf server
  • Intuitive library browsing
  • Variable playback speed
  • Offline listening
  • Smart sleep timer
  • Cross-device progress tracking
Features
Read full description

SoundLeaf is a premium iOS client for Audiobookshelf, the open-source, self-hosted audiobook and podcast server. Connect to your own server and get your whole collection — audiobooks, podcasts and ebooks — in a beautiful, fast app built for iPhone, iPad, Apple Watch and CarPlay. Learn more, read setup guides and see the app in action at https://soundleafapp.com OFFLINE FIRST • Your library syncs to the app, so you can browse everything even with the server off • Download books and episodes and play them anywhere, no connection needed • Downloads are free for everyone, podcast auto-download included • Local and remote server addresses: the app uses your local address on home Wi-Fi and your remote address everywhere else, on its own BUILT FOR LONG LISTENS • A powerful player with chapters, variable playback speed and position memory • A smarter sleep timer: tell it your night hours and it starts itself, fades out instead of stopping cold, and restarts when you press play • Progress syncs with your server, so every device stays on the same page • Background playback, lock screen controls and full landscape support PODCASTS, DONE RIGHT • Podcast transcripts: when a show publishes one, it runs along with the audio, and a tap opens a full reader • Smart Downloads keep the next episodes ready before you ask • A queue that shows what is playing, what is next and what is on the phone • Episode management per show: keep counts, auto-download, mark played THE EBOOK READER • Read the ebook that lives next to your audiobook • One tap jumps the page to where the narrator is, and back • Fonts, text size, line spacing, margins, and Light, Sepia and Dark pages EVERYWHERE YOU LISTEN • A real Apple Watch app, with offline playback on your wrist if you want it • CarPlay with library switching and a downloaded-only filter • Home screen widgets: now playing, recent books, your listening time MAKE IT YOURS • 32 themes and 55 app icons • Listening stats with streaks, totals, a year heatmap and daily patterns • Multiple libraries, series, authors, collections and search SoundLeaf is made for self-hosters and their families: people who keep their audiobook library on their own server with Audiobookshelf and want the best way to listen to it on Apple devices. Note: SoundLeaf requires an Audiobookshelf server to connect to. Audiobookshelf is free and open source; learn how to set one up at https://audiobookshelf.org and find help at https://soundleafapp.com/server/ Website: https://soundleafapp.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BATI Interview Techniques4 screens
SoundLeaf4 screens

Verdict

The call

The clearest difference is rating: BATI Interview Techniques at 5.0 against SoundLeaf's 4.3. BATI Interview Techniques also leads on in-app purchases (none vs 2). SoundLeaf's advantage is ratings volume (20 vs 1). On price, update cadence, 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. SoundLeaf sells 2 in-app purchases, starting at $19.99 per year. BATI Interview Techniques asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BATI Interview Techniques holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: SoundLeaf has 20 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on August 30, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
BATI Interview Techniques versus SoundLeaf: the parameters behind the verdict, then further details
ParameterBATI Interview TechniquesSoundLeaf
PriceFreeFree
Rating5.0 (1 ratings) — better4.3 (20 ratings)
Positive reviews—65.0% of reviews
Number of ratings120 — better
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.4 — better17.6
Further details — not scored
Size46 MB36 MB
Age rating4+4+
DeveloperQUESTION MARK MEDIA LLCHemant Kumar

Customer experience

BATI Interview Techniques

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SoundLeaf

All ratings20 ratings
Positive80.0%
Neutral15.0%
Negative5.0%
Written reviews20 reviews
Positive65.0%
Neutral25.0%
Negative10.0%

In-app purchases

None

BATI Interview Techniques

No in-app purchases

2 purchases

SoundLeaf

Subscriptions1
  • SoundLeaf Supporter$19.991 Year
One-time1
  • Pro$9.99

Questions

Is BATI Interview Techniques free?
BATI Interview Techniques is free to download, with no in-app purchases.
Is SoundLeaf free?
SoundLeaf is free to download, with in-app purchases available.
Which has better reviews, BATI Interview Techniques or SoundLeaf?
BATI Interview Techniques is rated higher. BATI Interview Techniques averages 5.0 out of 5 from 1 ratings, while SoundLeaf averages 4.3 from 20 ratings.
Do BATI Interview Techniques or SoundLeaf have ads?
Neither BATI Interview Techniques nor SoundLeaf shows ads.
Which is updated more often, BATI Interview Techniques or SoundLeaf?
BATI Interview Techniques ships an update fortnightly, and SoundLeaf fortnightly. Most recently, BATI Interview Techniques was updated on August 30, 2026 and SoundLeaf on September 22, 2026.

Other comparisons