Your personal inflation.
The inflation in the news is an average. Your shopping isn't. Bon.line shows you product by product how exactly your prices develop — from your own receipts.
Example index after three months of use. Your real index will look just like this — with your categories, your products, your numbers.
You feel inflation — you can't see it.
The statistical numbers in the news refer to a theoretical average household. They often have surprisingly little to do with your real shopping.
Statistics aren't your basket
The Federal Statistical Office calculates with over 700 goods and an abstract weighting. Your household has perhaps 200 recurring products — with a very specific distribution.
"Groceries +5 %" tells you nothing
Even if the statistics office gives you a category — it doesn't tell you whether your butter, your cheese or your bread became more expensive. Only product level makes inflation tangible.
Gut feeling is unreliable
"It feels more expensive" is true — or it isn't. Without real numbers from your own receipts, the feeling stays just a feeling — no reference, no actionable insight.
This is how your personal index emerges.
No extra work, no input forms. Just your receipts — the rest happens automatically.
Photograph receipts
Like usual: snap the receipts, quick check, done. The AI reads individual items, prices, quantities and discounts.
Bon.line compares
With every new receipt comparisons run: same product, same retailer, different price? Over weeks and months your real index emerges.
You see trends
Per category, per product, per retailer. Short-term fluctuations are smoothed, structural changes become visible.
What your index could look like.
Example analysis of a family household after three months of use — clearly by category, with trend compared to the previous month.
Inflation is personal. Statistics aren't.
When the statistics office reports an inflation rate of 3.2 %, your real burden may be at 1 % — or at 9 %. It depends completely on what you actually buy. Whoever drinks a lot of coffee is hit hard by bean-price inflation. Whoever doesn't drink any, not at all.
Bon.line turns "it feels more expensive" into a concrete number. And provides the basis on which you can decide whether it's worth changing something — or whether your perceived inflation isn't actually that dramatic.
"I always thought inflation had hit me hard. Bon.line shows me my index is at +1.8 % — that changes my perception completely." — from beta-phase user feedback
Inflation sources compared.
Five properties that matter for a meaningful personal inflation measurement — and how the common sources handle them.
| Property | Bon.line | Destatis | Banking app | Gut feeling |
|---|---|---|---|---|
| Based on your purchases | Yes | No | Per retailer | Yes |
| Product level visible | Yes | No | No | No |
| Trends over time | Weeks, months, years | Monthly | Limited | No |
| Smoothing of fluctuations | Automatic | Statistical | No | No |
| Relevance for your household | High | Medium | Low | Fluctuating |
Your household stays private — prices become visible.
Bon.line wants to make prices transparent, not you. What that means concretely:
What Bon.line DOES NOT do
- Individual receipts are not sold
- Personal shopping baskets do not go to third parties
- Account and billing data stay in your account
- Your household is not analysed for external profiles
How Bon.line protects you technically
- Nicknames instead of real names in the household
- Account and billing data separated from receipt data
- Pseudonymised and data-minimised processing
- Full export and deletion possible any time
Gut feeling becomes certainty.
You don't need to change anything. Just photograph your receipts. Bon.line does the rest and shows you after a few weeks where your money really goes — and how exactly your prices are moving.
Try 14 days free →Frequently asked questions
What is my personal inflation?
Your personal inflation shows how the prices of the products and categories you actually buy are developing. It can deviate significantly from official averages — because your basket isn't the theoretical statistical basket. Whoever drinks a lot of coffee feels a coffee-price rise differently than someone who never buys it.
How does Bon.line differ from the official inflation rate?
The official inflation rate refers to a theoretical average basket with over 700 goods. Your real basket has perhaps 150–250 recurring products and a very specific weighting. Bon.line calculates an index from exactly your purchases — making it significantly more relevant for your life reality.
How long until I see reliable trends?
First per-category analyses are visible after two to three weeks. For robust personal inflation values across multiple categories we recommend three months of use — then seasonal effects and one-off expenses become well visible. After six months you see real long-term trends.
Which categories are used for the calculation?
Bon.line recognises around 20 categories automatically — groceries, toiletries, drinks, sweets, pet supplies, household, hygiene, snacks and more. Within categories, individual product positions are compared, so you don't just see "groceries +6 %" but also "Gouda cheese +18 % since January".
Does Bon.line sell my price data?
Individual receipts, personal baskets and household profiles are never sold. Aggregated and anonymised price data can long-term contribute to a community picture of real price development — but always in a way that allows no link back to individual households. More on that in Real price transparency.
What happens with promotions and fluctuations?
Bon.line smooths short-term fluctuations by comparing over weeks and months — not over individual purchases. A promotion on coffee doesn't shift your index. Only when a product structurally becomes more expensive does it appear in the trend. You get the signal, not the noise.